Enhanced Gameday analysis cataloged by author

The updated version of this catalog is now hosted by The Hardball Times.

In the spirit of better organization, here is the Enhanced Gameday analysis catalog organized by author.

You can also see the full list of articles by date, and articles about pitchers listed by pitcher.

Anthony at FriarWatch (3 articles)

On April 23, he posted “How to use MLB Gameday Data”, describing some of the PITCHf/x data fields.
On April 25, he posted “Mark Buehrle’s No Hitter”, looking at the pitch location and umpire strike zone for the game from April 18th.
On August 2, he published “I Love It When a Plan Comes Together”, an article about Jake Peavy making an effort to mix his pitches better.

BadAssBaseball blog (3 articles)

On June 28, the following article was published in the Chinese language about Felix Hernandez: http://badassbaseball.blogspot.com/2007/06/enhance-gameday-4-seamerfelix.html
On July 3, the following article was published in the Chinese language about Hong-Chih Kuo: http://badassbaseball.blogspot.com/2007/07/enhanced-gameday-4-seamerslider.html
On August 22, the following article was published in the Chinese language about Brandon Webb: http://badassbaseball.blogspot.com/2007/08/webb-42-scoreless-innings-on-gameday.html

Chris at Bay City Ball (2 articles)

On January 23, 2008, he published “PITCHf/x: Examining Barry Zito’s 2007 Season“, an article about Barry Zito’s pitch repertoire and results.
On February 11, 2008, he published “PITCHf/x: Examining Matt Cain’s 2007 Season“, an article about Matt Cain’s pitch repertoire and results.

John Beamer (2 articles)

On May 7, THT published “Under the Skin of Enhanced Gameday”, an important article about the park-to-park accuracy of the PITCHf/x data, particularly release points.
On July 2, THT published “A Close Look at Tim Hudson”, an article about pitcher Tim Hudson and classifying his pitches using a statistical clustering function.

Jake at Bucco Blog (4 articles)

On October 26, Jake at Bucco Blog published “Manager Poll, Rumors, and PITCHf/x“, an article listing the batting performance for Pirates’ hitters against various pitch types.
On October 28, Jake at Bucco Blog published “Even More Rumors, Poll, and PITCHf/x“, an article examining the percentage of pitch types that Pirates’ hitters saw in various ball-strike counts.
On December 30, Jake at Bucco Blog published “PITCHf/x, Beaver’s Culture, and Only 2 Days Left“, an article showing the pitch results for fastballs thrown by Pat Maholm, Ian Snell, Tom Gorzelanny, Matt Morris, and Zack Duke.
On December 30, Jake at Bucco Blog published “Dejan’s McLouth Pipe-Dream“, an article looking at Nate McLouth’s hitting performance against the slider.

Steve Calcagno (1 article)

On June 19, he published “Spending Gameday with Chien-Ming Wang…”, an article classifying Wang’s pitches.

Dave Cameron (3 articles)

On June 21, he published “Weaver: Better Stuff?”, an article about the velocity and movement on Jeff Weaver’s pitches.
On August 13, he published “Jeff Weaver, Junkballer”, an article about Jeff Weaver’s start on August 12th.
On December 18, he published “Carlos Silva“, an article examining Silva’s pitching style based on Josh Kalk’s PITCHf/x data.

Louis Chao (2 articles)

On June 26, he published, in Chinese, “Diggin’ in on the Sinker”, an article looking at sinkerball pitchers. Putting this article through Google Translate to English makes it clear why that tool is still in beta.
On July 12, THT published “Another Look at the Sinker”, an article comparing the two-seam and four-seam fastballs and looking at pitcher A.J. Burnett.

Rob at Colamarino Has Titties (2 articles)

On January 17, 2008, he published “Jay-f/x 2007: Introduction“, an article looking at the PITCHf/x data and pitch selection for the Blue Jays pitching staff in 2007.
On January 23, 2008, he published “Jay-f/x 2007: Fastballs“, an article examining the PITCHf/x data for fastballs thrown by the Blue Jays pitching staff in 2007.

Chris Constancio (1 article)

On August 3, The Hardball Times published “Why Do Sinking Fastballs Cause Groundballs?”, an article looking at the difference in type of batted ball for pitchers who throw a sinking fastball versus those who throw a rising (or four-seam) fastball.

Mike Fast (28 articles)

On August 14, I published “What Does Joba Throw?”, an article classifying Joba Chamberlain’s pitches in his August 10th appearance.
On August 22, I published “Brandon Webb, Pitch Mixer Extraordinaire?”, an article looking at the pitch selection by Brandon Webb.
On August 23, I published “How to Build a Pitch Database”, a work-in-progress description of how I built my database.
On September 7, I published “Magnus Papelbonus”, an article about pitcher Jonathan Papelbon and techniques for classifying pitches by spin direction.
On September 10, I published “Papelbon Redux“, an update to my previous article about Jonathan Papelbon with pitch classification and park variance data.
On September 11, I published “How Many Seams Are You Holding?“, an article about differentiating the four-seam fastball and two-seam fastball from Edinson Volquez.
On September 12, I published “Mad Dog Mishmash“, an article classifying pitch types for Greg Maddux.
On September 14, I published “In the Land of Submariners“, an article classifying pitch types for Chad Bradford.
On September 17, I published “Simple Is Good“, an article classifying Zack Greinke’s pitch types and comparing his performance as a reliever and as a starter.
On October 2, I published “Going, Going, Gagne!“, an article classifying pitch types for Eric Gagne.
On October 3, I published “Gagne Fishing“, an article with strike zone charts by pitch type for Eric Gagne.
On November 6, I published “Bend It like Beckett“, an article classifying pitches for Josh Beckett.
On November 12, I published “Meanwhile, Beckett the Ranch…“, an article with strike zone charts by pitch type for Josh Beckett.
On November 15, I published “Appeasement“, an article classifying pitches for Joba Chamberlain.
On November 18, I published “Swinging at Shoe Tops?“, an article with strike zone charts by pitch type for Joba Chamberlain and examining a PITCHf/x data error.
On December 5, MVN published “What Does John Smoltz Throw?“, an article classifying pitches for John Smoltz.
On December 9, MVN published “Tales of the Cutter: Mariano Rivera“, an article classifying pitches and showing strike zone charts for Mariano Rivera.
On December 13, MVN published “Tales of the Cutter: An Analysis of Joakim Soria“, an article classifying pitches for Joakim Soria and showing his pitch mix and strike zone charts by pitch type and batter handedness.
On December 22, MVN published “Can We Classify Every Pitch?“, an article about the field of pitch classification using PITCHf/x data with a particular emphasis on my own work.
On January 3, MVN published “Tales of the Curve: An Analysis of Erik Bedard“, an article classifying pitches for Erik Bedard and showing his pitch mix and strike zone charts by pitch type and batter handedness.
On January 9, 2008, MVN published “Tales of the Changeup: An Analysis of Johan Santana“, an article classifying pitches for Johan Santana and showing his pitch mix and strike zone charts by pitch type and batter handedness.
On January 11, 2008, Rotojunkie published “A PITCHf/x Analysis of James Shields“, an article classifying pitches for James Shields and showing his pitch mix and strike zone charts by pitch type and batter handedness.
On January 14, 2008, MVN published “A PITCHf/x Primer“, an introduction and tutorial on using and understanding PITCHf/x data and finding resources for further study.
On January 29, 2008, MVN published “A PITCHf/x analysis of Kelvim Escobar“, an article classifying pitches for Kelvim Escobar and showing his pitch mix and strike zone charts by pitch type and batter handedness.
On February 18, 2008, MVN published “Breakdown of balls in play by count“, an article listing the ball-in-play results by ball-strike count from the 2007 Gameday data.
On February 24, 2008, MVN published “Winning with an 89-mph fastball: an analysis of Brian Bannister (Part 1)“, an article examining comments by Bannister about improving BABIP by inducing balls in play in favorable counts.
On February 26, 2008, MVN published “Winning with an 89-mph fastball: an analysis of Brian Bannister (Part 2)“, an article classifying pitches for Brian Bannister and showing his pitch mix and strike zone charts by pitch type and batter handedness.
On February 28, 2008, MVN published “Winning with an 89-mph fastball: an analysis of Brian Bannister (Part 3)“, an article examining ball-in-play patterns by right-handed hitters against Brian Bannister’s fastball.

Bill Ferris (10 articles)

On April 13, he published “A Different Look at Zumaya’s Outing”, an article about velocity and relaease point in Joel Zumaya’s two-inning save on April 12th.
On April 14, he published “A Different Look at the Bonderman-Halladay Duel”, an article about Jeremy Bonderman’s April 13th start.
On April 29, in his “Game 24: Twins at Tigers” recap, he used Gameday to chart pitcher Mike Maroth’s release point.
On June 3, he published “A Different Look at Andrew Miller”, an article about pitchers Andrew Miller and Kenny Rogers and classifying their pitches.
On July 29, he published “Comparing Kenny Rogers to Kenny Rogers”, an article about, guess who…You’re right! Kenny Rogers.
On September 14, he published “Fish Eye on the Tigers“, an article about the Detroit Tiger hitters’ plate discipline.
On September 15, he published “Jair Jurrjens 9/11 Start versus Texas“, an article examining his pitch breakdown and results from that start.
On September 17, he published “Jair Jurrjens 9/16 Start against the Twins“, an article examining his pitch breakdown and results from that start.
On February 10, 2008, he published “Scouting Dontrelle Willis“, an article looking at Dontrelle Willis’s pitch repertoire, how he uses it, and what results he gets.
On February 17, 2008, he published “Scouting Bonderman with pitch f/x“, an article looking at Jeremy Bonderman’s pitch repertoire, how he uses it, and what results he gets.

Dan Fox (22 articles)

On October 26, 2006, BP published “Information Revolution”, an introductory article about the PITCHf/x system.
On May 10, his article “Phil Hughes, Pitch by Pitch” discussed Hughes’ May 1st start in detail, including release point and fastball velocity throughout the game.
On May 24, BP featured “Batter Versus Pitcher, Gameday Style”, an article about pitch velocity and strike zone accuracy.
On May 31, BP published “Physics on Display”, an article about fastball deceleration from release to the plate and pitchers’ fastball velocity throughout the game.
On June 7, BP published “Gameday Triple Play”, an article about pitch deceleration, establishing the fastball, and measuring hitters’ plate discipline.
On June 14, BP published “The Science and Art of Building a Better Pitcher Profile”, about pitcher Felix Hernandez and methods for classifying his pitches.
On June 21, in “Gameday Meets the Knuckleball”, Dan looked at pitcher Tim Wakefield and his knuckleball.
On July 5, BP published “Searching for the Gyroball”, an article about pitcher Daisuke Matsuzaka and classifying his pitches.
On August 16, BP published “Putting the Pedal to the Metal”, an article using PITCHf/x to examine whether pitchers get speed and movement on their pitches in clutch situations.
On August 23, BP published “Visualizing Pitches”, an article looking at pitch trajectories in three dimensions.
On August 25, the Rocky Mountain SABR chapter published “Jimenez Delivers”, an article about Ubaldo Jimenez’s August 25th start.
On August 27, the BP Unfiltered blog published “Changeup Challenged”, an article classifying Billy Wagner’s pitches.
On September 6, BP published “Wily Mo Redux”, an article about Wily Mo Pena, including how he has hit various pitches in different counts and locations.
On September 13, BP published “Return of the Fish Eye“, an article updating his previous article on plate discipline.
On September 27, BP published “A Mailbag Double Play“, an article including updates to his Fish/Eye charts for hitters.
On October 5, the BP Unfiltered blog published “Carmona’s Trend“, an article looking at Fausto Carmona’s pitch mix.
On October 7, he published “Rocktober Rocks On!“, an article containing game notes from the Colorado-Philadelphia Division Series Game 3, including comments about pitches from Ubaldo Jimenez.
On October 11, BP published “On Atmosphere, Probability, and Prediction“, an article about weather effects on pitched baseballs.
On October 25, BP published “Free Stuff and the Men in Blue“, an article about the shape of the called strike zone in the playoffs.
On October 26, he published “Game Two Notes“, including a section on the consistency of Ubaldo Jimenez’s release point.
On October 27, the BP Unfiltered blog published “Sliders but no Gyro“, an article looking at Daisuke Matsuzaka’s pitch mix.
On January 30, 2008, Marc Normandin and Dan Fox published “Player Profile: James Shields“, an article about pitcher James Shields.

Tom Goyne (2 articles)

On December 3, he published “Breaking Down Adam Eaton’s Breaking Ball“, an article looking at the break on Adam Eaton’s curve.
On December 21, he published “Breaking Down Adam Eaton’s Breaking Ball, Part II“, updating his previous article on the break of Adam Eaton’s curve.

Doug Gray (3 articles)

On October 12, MVN published “Breaking Down Homer Bailey Part 1“, an article looking at Homer Bailey’s curveball.
On October 13, MVN published “Breaking Down Homer Bailey Part 2“, an article looking at Homer Bailey’s fastball.
On October 14, MVN published “Breaking Down Homer Bailey Part 3“, an article looking at Homer Bailey’s changeup.

Jonathan Hale (32 articles)

On September 14, MVN published “A.J. Burnett Pitch Analysis–Then and Now“, an article about pitcher A.J. Burnett.
On September 20, he published “Jesse Litsch Is 22 Years Old“, an article looking at pitch types for three of Jesse Litsch’s starts.
On September 25, he published “Jesse Litsch–What Went Right?“, an article about Jesse Litsch’s September 25th start.
On September 29, he published “Dustin McGowan–Dissection of a Masterpiece“, an article about Dustin McGowan’s May 28th and June 24th starts.
On October 2, he published “Something You Already Knew about John McDonald”, an article about John McDonald’s batting results for different pitch types and speeds.
On October 6, he published “Did Pitchers Adapt to Alex Rios?“, an article showing strike zone hitting charts for Alex Rios.
On October 8, he published “Vernon Wells vs. the First Pitch“, an article examining the first pitch results for Vernon Wells.
On October 13, he published “Pitching Forensics–The Doctor Is In“, an article examining characteristics of Roy Halladay’s rough patch in the first half of the season.
On October 15, he published “Conclusion: Livan Hernandez WAS Screwed“, an article about the called strike zone for the NLCS Game 3 start by Livan Hernandez.
On October 16, he published “Pitch Analysis of Jake Westbrook ALCS Game 3–Red Sox vs. Indians“, an article about Jake Westbrook’s ALCS Game 3 start.
On October 17, he published “Game 4 ALCS–Pitch f/x Analysis of Wakefield vs. Byrd“, an article about the ALCS Game 4 starts by Tim Wakefield and Paul Byrd.
On October 17, he published “FOX Pitchtracker’s Strike Zone Is Brutal“, an article comparing the FOX Pitchtracker strike zone to PITCHf/x data.
On October 19, he published “Beckett’s Gem Keeps Boston Alive“, an article about Josh Beckett’s American League Championship Series Game 5 start.
On October 21, he published “Pitching on Fumes“, an article about Curt Schilling’s Game 6 start in the ALCS.
On October 21, he published “Carmona Got Squeezed“, an article about the called strike zone for Fausto Carmona’s October 20th ALCS start.
On October 22, he published “What Happened to Hafner?“, an article about the pitches that Travis Hafner saw in the ALCS.
On October 25, he published “Worst. Outing. Ever.“, an article about Ryan Speier’s World Series Game 1 performance.
On October 25, MVN published “Jeff Francis off to a Rocky Start in the World Series“, an article about the postseason performance of Jeff Francis.
On November 21, he published “A Gentle Massage“, an article investigating whether better pitchers get more strike zone calls in their favor.
On November 26, he published “Out of the Zone“, an article looking at out of strike zone swing tendencies for hitters.
On November 27, he published “Garbage Picking“, an article looking at out of zone tendencies for Toronto Blue Jays hitters.
On November 28, he published “Missing Corners“, an article about the shape of the strike zone as actually called.
On November 28, THT published “A Zone of Their Own“, an article about the size of umpire strike zones.
On December 19, Baseball Daily Digest published “Waiting for Their Pitch“, an article about the pitch selection and swing data for all hitters from 2007.
On January 15, 2008, Baseball Daily Digest published “PITCHf/x: A Look at Scott Rolen and Troy Glaus“, an article looking at the pitches that Rolen and Glaus saw in 2007 and the results for pitches they swung at.
On January 19, 2008, BDD published “Detailed Pitch Analysis: Part I–The Rising Fastball“, an article looking at fastball outcomes broken down by strike zone location and handedness of the batter and pitcher.
On February 3, 2008, BDD published “Detailed Pitch Analysis: Part II–The Curve Ball“, an article looking at curveball outcomes broken down by strike zone location and handedness of the batter and pitcher.
On February 8, 2008, he published “Hill Hacking“, an article breaking down Aaron Hill’s performance by ball-strike count.
On February 18, 2008, BDD published “Throwing Smoke (and Mirrors)“, an article looking at the fastest and slowest fastballs among major league pitchers.
On February 29, 2008, BDD published “Some Like It Hot“, an article about hitter and pitcher performance by temperature.
On January 25, 2008, he published “Mighty Casey on the Mound“, an article about pitcher Casey Janssen.
On January 29, 2008, he published “Happy Birthday Lyle“, an article with a strike zone chart for Lyle Overbay.

Ike Hall (6 articles)

On September 12, he published “A Side Project Perhaps“, an article with some thoughts on the PITCHf/x data set and questions that could be asked of it.
On September 13, he published “Thinking about Calibration“, an article about PITCHf/x calibration procedures.
On September 17, he published “More PITCHfx Thoughts“, an article with further thoughts about PITCHf/x calibration procedures and trajectory calculation.
On September 24, he published “More Calibration Thoughts“, an article with additional thoughts about PITCHf/x calibration procedures.
On October 3, he published “Finding the Zone“, an article about strike zone measurement accuracy by park.
On February 27, 2008, he published “Acceleration due to drag and PitchF/X“, an article about park corrections to the acceleration data and examining the drag constant vs. velocity curves for various parks.

Josh Kalk (28 articles)

On August 30, he published “Sheets Returns from the DL”, an article looking at Ben Sheets’ start on August 29th.
On August 30, he published “Fielder Hit Chart”, an article showing Prince Fielder’s hits by pitch location.
On August 31, he published “More Fun with PitchFX”, an article showing Ryan Braun’s hits by pitch location and ball/strike charts for Braun, Geoff Jenkins, and Prince Fielder.
On September 2, he published “Estrada Hit Chart”, an article showing hits by pitch location and ball/strike chart for Johnny Estrada.
On September 3, he published “Preliminary Correction to PitchFX Data”, an article looking at park-to-park inconsistencies in the PITCHf/x data for the vertical initial position parameter, z0.
On September 5, he published “Preliminary Correction to PitchFX Data Part II”, an article further examining the variance by park in the vertical initial position parameter, z0.
On September 5, he published “Somewhat Pretty Pictures”, an article about correcting for park differences in horizontal and vertical initial position.
On September 6, he published “Response to a Reader Question”, an article about correcting the PITCHf/x data by park for the initial position, velocity, and acceleration parameters.
On September 11, he published “Player Cards“, an article about the initial results from his pitch classification algorithm. Along with the article is a link to a set of graphs for almost 300 pitchers.
On September 12, Brew Crew Ball published “More Fun with PITCHf/x“, an article applying his pitch classification algorithm to Yovani Gallardo, Francisco Cordero, Chris Capuano, and Brian Shouse.
On September 13, he published “Progress. Errrr, Sort of.“, an article updating the results from his pitch classification algorithm.
On September 14, Brew Crew Ball published “Reds @ Brewers Pitching Preview“, an article applying his pitch classification algorithm to Tom Shearn, Kirk Saarloos, Matt Belisle, Ben Sheets, Jeff Suppan, and Carlos Villanueva.
On September 19, he published “Corrections to the Corrections?“, an article about looking for changes over time in his park corrections to the PITCHf/x data.
On September 20, he published “Brand New Player Cards“, an article with links to his new pitcher charts with normalized x-z initial points and accelerations, this time including home and road data.
On September 27, he published “Player Cards for Batters Now Available“, an article announcing the availability of his batter strike zone charts and results by pitch type.
On October 4, THT published “A Closer Look at Jeff Francis’ Start Against the Phillies“, an article about Jeff Francis’ October 3rd playoff start.
On October 4, he published “Was Manny Corpas Doctoring the Ball?“, an article about the October 3rd Divison Series relief appearance by Manny Corpas.
On October 10, THT published “Anatomy of a Player: Albert Pujols“, an article examining Albert Pujols’ hitting performance by pitch type.
On November 12, he published “Explanation of the Correction Code“, an article describing his method for correcting park-related inconsistencies in the PITCHf/x data.
On November 12, he published “Classification Algorithm Explained“, an article explaining his algorithm for classifying pitches for his player cards.
On November 14, THT published “Web-based PITCHf/x Tool“, an article introducing a web-based tool to query his PITCHf/x database.
On November 20, THT published “Anatomy of a Player: Tom Glavine“, an article classifying Tom Glavine’s pitches and charting the strike zone location of his fastballs.
On December 3, he published “Web-based PITCHf/x Tool Help/Comment Page“, an article explaining the updates to the PITCHf/x query tool.
On December 4, THT published “Anatomy of a Player: Tim Lincecum“, an article classifying Tim Lincecum’s pitches and charting the strike zone location of his changeups.
On December 13, THT published “Anatomy of a Player: League Average Pitcher“, an article detailing the average pitch speeds and spin-induced break for major league fastballs, sinkers, and cutters.
On January 22, 2008, THT published “Anatomy of a player: league average pitcher Part 2“, an article looking at average speed and movement for off-speed pitches.
On February 12, 2008, THT published “Pitcher similarity scores“, an article detailing a method to find pitchers who are the most similar to one another on the basis of their pitching repertoire.
On February 19, 2008, THT published “Pitcher similarity scores (Part 2)“, an article updating and expanding on his method for finding pitchers who are the most similar to one another on the basis of their pitching repertoire.

Justin Inaz (2 articles)

On September 19, he published “PITCHf/x Plots for Harang and Arroyo“, an article discussing pitch classification plots for pitchers Aaron Harang and Bronson Arroyo.
On September 24, he published “Could Jared Burton Be Another Mariano Rivera?“, an article with pitch classification plots from fellow author John Walsh for pitchers Homer Bailey, David Weathers, Jared Burton, Bill Bray, Todd Coffey, and Gary Majewski.

mb22414 from FriarForecast (6 articles)

On August 27, he published “Jake Peavy: Pitch Variation and Velocity”, an article looking at pitcher Jake Peavy and his pitch selection.
On August 28, he published “Classifying Peavy’s Pitches”, an article about Jake Peavy’s pitch types in his August 22nd start.
On September 7, he published “Another Look at Jake Peavy”, an article looking at Jake Peavy’s September 5th start and classifying his pitches.
On September 20, he published “Catching Up on All Things PITCHf/x“, an article about Jake Peavy’s pitch types.
On September 22, he published “Checking in on Pedro“, an article about pitcher Pedro Martinez’s performance since returning from surgery.
On September 27, he published “A New Jake Peavy for a Day“, an article about Jake Peavy’s September 26th start.

Dr. Alan Nathan (4 articles)

On August 8, he published “Analysis of PITCHf/x Pitched Baseball Trajectories” (PDF), a paper looking at Jon Lester’s start on August 3rd and classifying his pitches according to speed, spin magnitude, and spin direction. This technique shows important promise for pitch classification independent of release point measurement distance (y0). Plus there’s a lot of cool stuff on equations of motions for any other physicists out there.
On October 4, Eric Van and Alan Nathan posted a breakdown of Josh Beckett’s October 3rd playoff start to the Sons of Sam Horn message board. See posts #64, #92, and #93.
On December 19, he published “Effect of the Magnus Force in the PITCHf/x Tracking System“, an article deriving improved equations for the break and spin of a pitch due to the Magnus force, accounting for the effect of drag in the x and z directions.
On February 8, 2008, he published “A Statistical Study of PITCHf/x Pitched Baseball Trajectories“, an article about error calculation and propagation for quantities calculated from PITCHf/x data.

Mark Newman (1 article)

On October 2, MLB published “Pitch-f/x Adds Insight to Watching Games“, an article about the PITCHf/x camera system with details about the setup process.

Harry Pavlidis (36 articles)

On August 22, he published “Rich Hill’s Four Pitches”, an article classifying, not surprisingly, Rich Hill’s pitches.
On August 23, he published “Rich Hill - Numbers”, an article looking at the results of those pitches.
On August 24, he published “Micah Owings”, an article classifying the pitches of Micah Owings.
On August 26, he published “Just an Example” and “More out of the Zone”, a pair of articles about players who swing at pitches above or below the strike zone.
On August 29, he published “Zambrano vs. Sheets, in LA”, an article comparing pitchers Carlos Zambrano and Ben Sheets from starts earlier in the season in Dodger Stadium.
On August 31, he published “Zambrano vs. Sheets, Wrigley Edition”, an article comparing Carlos Zambrano and Ben Sheets in their starts in the August 29th game.
On August 31, he also published “Patton Preview”, an article looking at Astros’ pitcher Troy Patton.
On September 1, he published “Patton vs. Wandy”, an article about pitchers Troy Patton and Wandy Rodriguez.
On September 2, he published “Other Side of Hill”, an article showing Rich Hill’s pitch location versus pitch type.
On September 2, he published “Fooled by Hill”, an article about strike zone calls on Rich Hill’s various pitch types.
On September 2, he published “Hill ≠ Marshall “, an article comparing pitchers Rich Hill and Sean Marshall.
On September 2, he published “Marmol”, an article about pitcher Carlos Marmol.
On September 3, he published “Stults - Trial Balloon”, an article showing 3-D pitch trajectory plots for pitcher Eric Stults.
On September 4, he published “Dodgers v Cubs”, an article about pitch types thrown by the Dodgers’ rotation: Brad Penny, Derek Lowe, Esteban Loaiza, Eric Stults.
On September 9, he published “Finding the Zone”, an article about inconsistencies in the PITCHf/x data for the strike zone parameters sz_top and sz_bot.
On September 10, he published “A Matter of Style and Judgment“, an article about hitters’ strike zone judgment.
On September 11, he published “Aiming High“, an article about hitters’ contact rates and home runs on high pitches.
On September 15, he published “Swing Low (Sweet Chariot) Geoff Jenkins“, an article about hitters’ contact rates and home runs on low pitches.
On September 16, he published “Clusters“, an article about using k-means cluster analysis to classify pitch types.
On September 16, he published “Ted Lilly Clusters“, an article applying k-means cluster analysis to classify pitch types for Ted Lilly.
On September 17, he published “Updated Script, Plus Some Extra SQL“, an article sharing code for his spider and parser and database structure for his hitter strike zone and pitch spin plots.
On September 17, he published “Arroyo Clusters“, an article classifying pitch types for Bronson Arroyo.
On September 19, he published “Tonight’s Opponent: Tom Shearn“, an article classifying pitch types for Tom Shearn.
On September 19, he published “Shearn Speed“, an article looking at start-to-start variance in pitch speed for Tom Shearn and whether it is a park and wind-related effect.
On September 22, he published “Hello Soto“, an article with a strike zone chart for Geovany Soto.
On September 22, he published “Local Kid, Probably a Sox Fan“, an article looking at pitch types for Tom Gorzelanny.
On September 25, he published “Up Next: Dan Barone“, an article about pitch Dan Barone, examining his pitch types using spin rate graphs.
On September 26, he published “Peskiest of the Fish“, an article about a Jeremy Hermida at bat on September 25th.
On September 26, he published “Peskiest of the Fish Part 2“, an article about two Jeremy Hermida at bats on September 25th.
On October 4, he published “Cubs v Davis“, an article classifying pitch types for Doug Davis.
On October 6, he published “Livan’s Bag-o-Tricks“, an article classifying pitch types for Livan Hernandez.
On October 6, he published “Hill’s Curve and the Weather“, an article examining the effect of weather conditions on the break of Rich Hill’s curveball.
On December 6, he published “Jose Ascanio“, an article characterizing pitches for Jose Ascanio.
On December 17, he published “Winter Pie“, an article looking at what pitches Felix Pie saw and what he swung at.
On January 6, 2008, he published “Felix and Matt–Pitch Preferences“, an article showing pitches seen, swing rates, and contact rates by area of the strike zone for Felix Pie and Matt Murton.
On January 13, 2008, he published “Byrd Pitch Preferences“, an article showing pitches seen, swing rates, and contact rates by area of the strike zone for Marlon Byrd, Felix Pie, and Matt Murton.

Prof Pepper (6 articles)

On July 7, he published “Pitch by Pitch: Un Assaggio“, an Italian-language article about pitch location and the strike zone.
On July 14, he published “Cosi Si Vincono I Cy Young, Baby!“, an Italian-language article about pitchers Johan Santana and Joe Nathan.
On January 2, 2008, he published “Cosi’ Uguali, Cosi’ Diversi (Part 1)“, an Italian-language article looking for the most unique curveballs in major league baseball.
On January 5, 2008, he published “Cosi’ Uguali, Cosi’ Diversi (Part 2)“, an Italian-language article looking for the most unique fastballs in major league baseball.
On January 20, 2008, he published “Cosi’ Uguali, Cosi’ Diversi (Part 3)“, an Italian-language article looking for the most unique sliders, changeups, and curveballs in major league baseball along with illustrations of the grips for each pitch.
On February 3, 2008, he published “Cosi’ Uguali, Cosi’ Diversi (Part 4)“, an Italian-language article summarizing his series on the most unique pitches in major league baseball, discussing a few other less common pitches, and looking at the breakdown of outcomes for each pitch type, split out by handedness.

SG at Replacement Level Yankees Weblog (1 article)

On January 15, 2008, SG published “Pitch F/X and Joba Chamberlain“, an article looking at the results of Joba Chamberlain’s pitches by pitch type.

Greg Rybarczyk (1 article)

On February 28, 2008, THT published “Seeing is believing“, an article about a concept he calls observational analysis, expanding beyond PITCHf/x to capturing speed-off-bat data and fielding information.

Renè Saggiadi (0 articles)

Rene’s extensive list of articles in the Italian language can be found at his blog: .144.

Joe P. Sheehan (37 articles)

On February 28, he published “Fingerprinting Jeff Weaver”, an article about pitcher Jeff Weaver, classifying his pitches based on his performance in the 2006 playoffs with St. Louis.
On March 29, he published “Enhanced Gameday”, an article about various pitchers from the 2006 playoffs, looking at pitch location, release points, and classifying pitches for Mike Mussina.
On April 18, THT published “Another Look at Enhanced Gameday”, an article about pitch selection, velocity, and classifying pitches for Felix Hernandez and Kevin Millwood.
On April 19, he published “More Fun with Enhanced Gameday”, an article about consistency of pitch movement, location, and release points, and classifying pitches for John Lackey.
On April 26, he published “That Sinking Feeling”, an article about the two-seam fastball, examining pitchers Derek Lowe, Aaron Cook, Brandon Webb, and Carlos Silva.
On May 11, he published “Location, Location, Location”, tracking the location, BABIP, and swing percentage of pitches in different grid locations around the strike zone.
On May 25, he published “Dangerous Curves”, on the break of the curveball and pitchers Barry Zito and Rich Hill.
On June 14, he published “Ch-ch-ch-ch-changes…”, on the effectiveness of the changeup and pitchers Cole Hamels, Josh Beckett, Trevor Hoffman, and Johan Santana.
On June 28, he published “Is There Something in the Way It Moves?”, on pitcher Roy Halladay and the consistency of his stuff from start to start.
On July 13, he published “Under Pressure”, on pitchers Jake Peavy and Dan Haren and their pitch selection in high-pressure versus low-pressure situations.
On July 26, he published a collection of PITCHf/x-related notes under the title “Not an Article about Pitching at Altitude”. He discusses preliminary data about the effect of altitude on the break of pitches, and updates his BABIP charts from “Location, Location, Location”.
On August 10, he published “Makin’ a Filter”, an article about an automated method for classifying all pitches into either fastball or off-speed and drawing some conclusions from the data about when each type of pitch is thrown.
On August 17, he published “May I Have Seconds”, an article about calculating pitched ball trajectories.
On August 24, he published “Park Differences and Reaction Distances”, an article examining PITCHf/x data inconsistencies between parks and looking at batter reactions times and distances for different pitches.
On August 31, he published “And Now for Something Completely Different”, an article showing hit charts for various situations and cross-referencing some information from his pitch database.
On September 7, he published “That Sinking Feeling: Part Deux”, an article examining the relationship between sinkers and ground balls.
On September 13, he published “The Other Side of the Pitch“, an article looking at BABIP strike zone charts for Vladimir Guerrero and Jason Kendall and also examining which hitters see which types of pitches most often.
On September 21, he published “‘Breaking’ Away“, an article about methods of describing and quantifying pitch movement, or break, looking at Barry Zito’s pitch types with these methods, and listing pitchers with the largest break for each of the major pitch types.
On September 28, he published “Scouting Jake Peavy“, an article profiling pitcher Jake Peavy.
On October 12, he published “Beckett vs. Sabathia“, an article classifying pitches and examining pitching strategies for Josh Beckett and C.C. Sabathia.
On October 19, he published “Pitch Sequencing“, an article examining pitch sequences for Josh Beckett, C.C. Sabathia, and Greg Maddux.
On October 26, he published “Pitch Frequency“, an article looking at fastball pitch frequency for pitchers in different ball-strike counts.
On November 2, he published “Pitching to the Hitter“, an article examining fastball pitch frequency seen by hitters based on their slugging ability.
On November 16, he published “Predicting Pitches“, an article examining the percentage of fastballs thrown in different situations.
On November 23, he published “Post-Thanksgiving Quickie“, an article about the probability of a sinking and non-sinking fastballs to be hit on the ground or in the air.
On November 30, he published “Dirty Jobs“, an article examining fastball percentage and pitch location in various ball-strike counts.
On December 10, he published “Dirty Jobs: Part 2“, an article looking at ball-strike percentages for fastballs thrown at different counts.
On December 14, he published “The Same Things“, an article about calculating similarity scores for pitches from different pitchers and a look at pitcher Jared Burton.
On December 23, he published “Winter Wonderland“, an article showing how often each type of pitch is hit on the ground compared to what height it is thrown in the strike zone.
On January 4, 2008, he published “Old Man River“, an article looking at the performance characteristics of old pitchers versus young pitchers.
On January 10, 2008, he published “Grouping Maddness“, an article comparing the fastball and slider performance of hard-throwing and soft-tossing old and young pitchers.
On January 25, 2008, he published “First Things First“, an article looking at first-pitch tendencies based on pitch type.
On February 1, 2008, he published “Splitsville“, an article looking at the platoon splits by pitch type for pitchers Takashi Saito and Mariano Rivera.
On February 7, 2008, he published “Splitsville: Take 2“, an article looking at pitchers who threw a particular type of pitch much more often to batters of one handedness than the other.
On February 15, 2008, he published “Weighing In“, an article about calculating per-pitch run values and ranking some of the best pitches in baseball by this method.
On February 21, 2008, he published “More Run Values“, an article about per-pitch run values by ball-strike count and listing average values by pitch type and handedness of batter and pitcher.
On February 29, 2008, he published “Locational Run Values“, an article about per-pitch run values by strike zone location.

SoxScout (4 articles)

On October 24, SoxScout posted a pitch characterization for Josh Beckett’s World Series Game 1 start to the Sons of San Horn message board. See post #18.
On October 25, SoxScout posted pitch characterizations for Curt Schilling’s World Series Game 2 start and Hideki Okajima’s relief appearance to the Sons of San Horn message board. See post #28.
On October 27, SoxScout posted a pitch characterization for Daisuke Matsuzaka’s World Series Game 3 start to the Sons of San Horn message board. See post #34.
On October 28, SoxScout posted a pitch characterization for Jon Lester’s World Series Game 4 start to the Sons of San Horn message board. See post #35.

ultxmxpx (2 articles)

On June 3, he posted “Shields/Kazmir pitch selection” as a topic on the RaysBaseball forum.
On July 10, he published this list of pitchers and contact rate on their various pitches, which he had classified.

Eric Van (6 articles)

On October 4, he posted a breakdown of Josh Beckett’s October 3rd playoff start to the Sons of Sam Horn message board, post #64.
On October 4, Eric Van and Alan Nathan posted a breakdown of Josh Beckett’s October 3rd playoff start to the Sons of Sam Horn message board. See posts #64, #92, and #93.
On October 24, he posted a pitch type breakdown of Jeff Francis to the Sons of San Horn message board. See posts #14 and #17.
On October 25, he posted a pitch type breakdown of Ubaldo Jimenez to the Sons of San Horn message board. See post #25.
On October 27, he posted a pitch type breakdown of Josh Fogg to the Sons of San Horn message board. See post #32.
On October 30, he posted a pitch selection comparison for Jon Lester between his World Series Game 4 start and his ALCS relief appearance to the Sons of San Horn message board. See post #36.

John Walsh (10 articles)

On June 6, THT published “In Search of the Sinker”, one of the definitive articles on classifying pitches. In this process John examines the sinking fastball and pitcher Randy Wolf.
On June 26, THT published “Schilling’s Aching Schoulder”, an article about detecting Curt Schilling’s shoulder injury in the Enhanced Gameday data.
On July 11, THT published “Strike Zone: Fact vs. Fiction”, an article about the strike zone, as called by the umpires, versus right-handed and left-handed batters.
On July 25, THT published John’s followup article “The Eye of the Umpire”, containing some refinements to the previous article. The pair of articles are an excellent beginning to strike zone analysis.
On September 4, THT published “Squaring It Up”, an article examining the results of pitches in and out of the strike zone.
On September 19, THT published “Pitch Identification Tutorial“, as its title indicates, a tutorial about pitch types, including pitch charts for about 150 pitchers.
On November 1, THT published “Don’t Blame Pedro“, an article classifying pitches and examining pitching strategies for Pedro Martinez.
On November 27, THT published “Butterflies Are Not Bullets“, an article examining pitcher Tim Wakefield.
On December 20, THT published “Fastball, Slider, Changeup, Curveball–An Analysis“, an article detailing the league average speed and spin movement, usage by handedness and count, and results for pitches and balls in play for each of the four basic pitch types. This piece is an outstanding reference.
On February 26, 2008, THT published “Searching for the game’s best pitch“, an article describing a method for calculating per-pitch run values and presenting ratings of some of the best of each pitch type from 2007 on this basis.

Steve West (13 articles)

On June 14, he published “Rotation Release Points”, an article about the release point consistency of the starting rotations of Texas, Anaheim, and Oakland.
On June 18, he published “Rangers Rotation Pitch Types”, an article classifying the pitch types of Texas pitchers Kevin Millwood, Brandon McCarthy, Kameron Loe, Vicente Padilla, and Robinson Tejeda.
On June 25, he published “Rangers Rotation Release Points Redux”, an article examining whether the Texas starters were tipping their pitches by varying release points.
On July 12, he published “Pitch Break Angle vs Length”, and article about classifying pitch types using these two new PITCHf/x parameters. This article is a useful complement to the pitch classification work of Fox, Walsh, and Beamer.
On July 30, he published “Do Pitchers Affect the Strike Zone”, a look at batted ball results plotted against pitch location in the strike zone.
On August 3, he published “More McCarthy”, an article about pitcher Brandon McCarthy, classifying his pitches.
On August 7, he published “The Slings and Arrows of Outrageous Strike Zones”, an article comparing the umpire strike zones in the Texas-Oakland game of August 6th.
On August 9, he published “Random Strike Zones Part 2″, an article investigating the results of pitches to Michael Young.
On August 16, he published “Passing Out POTY Ballots”, an article about choosing the Rangers’ best pitcher of 2007, and also classifying pitches for Joaquin Benoit and C.J. Wilson.
On August 20, he published “Thank You Mr. Santana, May We Have Another?”, an article classifying Johan Santana’s pitches in his 17-strikeout performance against the Rangers on August 19th.
On August 30, he published “Danks but No Danks”, an article looking at pitcher John Danks and classifying his pitches.
On September 8, he published “Switching on a Lightbulb”, an article about pitcher Edinson Volquez.
On September 16, he published “The Young Strike Zone, Part 3“, an article in his series examining strike zone charts for Michael Young.

Whither (5 articles)

On June 7, he published “Analysis of Wang’s Pitching Stuff via New Gameday Data”, an article about pitcher Chien-Ming Wang.
On June 13, he published an article about pitcher Hong-Chih Kuo: http://blog.roodo.com/Whither/archives/3458611.html
On August 31, he published an article about Chien-Ming Wang’s start against Boston on August 30th: http://blog.roodo.com/Whither/archives/4052827.html
On September 16, he published “Gameday Pearl Radar” (Google translation of the title, sorry!), a Chinese-language article about pitch classification for Andy Pettitte, Daisuke Matsuzaka, Chien-Ming Wang, Josh Beckett, Roger Clemens, and Curt Schilling. The graphs are in English, so you might get something out of the article even if you can’t read Chinese.
On October 9, he published “For Gameday Regulars Only“, an article about Chien-Ming Wang’s pitch mix.

Update in progress…

Last updated March 1, 2008, with the exception of work by Harry Pavlidis (last updated January 15) and Renè Saggiadi. If those two guys weren’t so prolific, I would have gotten them into this update, too.

Fast Balls

Enhanced Gameday analysis cataloged by author

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