Enhanced Gameday analysis cataloged by date

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

Since my catalog of enhanced gameday articles has now expanded past seventy, it’s time for better organization. This post has all the articles listed by date.

I also plan to have all the articles listed by author, by topic, by team, and by pitcher.

October 2006 (1 article)

• On October 26, Dan Fox published “Information Revolution”, an article about the PITCHf/x system.

February 2007 (1 article)

• On February 28, Joe P. Sheehan published “Fingerprinting Jeff Weaver”, an article about pitcher Jeff Weaver, classifying his pitches based on his performance in the 2006 playoffs with St. Louis.

March 2007 (1 article)

• On March 29, Joe P. Sheehan published “Enhanced Gameday”, an article about various pitchers from the 2006 playoffs, looking at pitch location, release points, and classifying pitches for Mike Mussina.

April 2007 (7 articles)

• On April 13, Bill Ferris published “A Different Look at Zumaya’s Outing”, an article about velocity and release point in Joel Zumaya’s two-inning save on April 12th.
• On April 14, Bill Ferris published “A Different Look at the Bonderman-Halladay Duel”, an article about Jeremy Bonderman’s April 13th start.
• On April 18, Joe P. Sheehan published “Another Look at Enhanced Gameday”, an article about pitch selection, velocity, and classifying pitches for Felix Hernandez and Kevin Millwood.
• On April 23, Anthony posted “How to use MLB Gameday Data”, describing some of the PITCHf/x data fields.
• On April 25, Anthony posted “Mark Buehrle’s No Hitter”, looking at the pitch location and umpire strike zone for the game from April 18th.
• On April 26, Joe P. Sheehan published “That Sinking Feeling”, an article about the two-seam fastball, examining pitchers Derek Lowe, Aaron Cook, Brandon Webb, and Carlos Silva.
• On April 29, in his “Game 24: Twins at Tigers” recap, Bill Ferris used Gameday to chart pitcher Mike Maroth’s release point.

May 2007 (6 articles)

• On May 7, John Beamer 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 May 10, Dan Fox’s article “Phil Hughes, Pitch by Pitch” discussed Hughes’ May 1st start in detail, including release point and fastball velocity throughout the game.
• On May 11, Joe P. Sheehan published “Location, Location, Location”, tracking the location, BABIP, and swing percentage of pitches in different grid locations around the strike zone.
• On May 24, Dan Fox featured “Batter Versus Pitcher, Gameday Style”, an article about pitch velocity and strike zone accuracy.
• On May 25, Joe P. Sheehan published “Dangerous Curves”, on the break of the curveball and pitchers Barry Zito and Rich Hill.
• On May 31, Dan Fox published “Physics on Display”, an article about fastball deceleration from release to the plate and pitchers’ fastball velocity throughout the game.

June 2007 (19 articles)

• On June 3, Bill Ferris published “A Different Look at Andrew Miller”, an article about pitchers Andrew Miller and Kenny Rogers and classifying their pitches.
• On June 3, ultxmxpx posted “Shields/Kazmir pitch selection” as a topic on the RaysBaseball forum.
• On June 6, John Walsh 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 7, Dan Fox published “Gameday Triple Play”, an article about pitch deceleration, establishing the fastball, and measuring hitters’ plate discipline.
• On June 7, Whither published, in Chinese, “Analysis of Wang’s Pitching Stuff via New Gameday Data”, an article about pitcher Chien-Ming Wang.
• On June 13, Whither published a Chinese-language article about pitcher Hong-Chih Kuo: http://blog.roodo.com/Whither/archives/3458611.html
• On June 14, Dan Fox published “The Science and Art of Building a Better Pitcher Profile”, about pitcher Felix Hernandez and methods for classifying his pitches.
• On June 14, Joe P. Sheehan 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 14, Steve West published “Rotation Release Points”, an article about the release point consistency of the starting rotations of Texas, Anaheim, and Oakland.
• On June 18, Steve West 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 19, Steve Calcagno published “Spending Gameday with Chien-Ming Wang…”, an article classifying Wang’s pitches.
• On June 21, in “Gameday Meets the Knuckleball”, Dan Fox looked at pitcher Tim Wakefield and his knuckleball.
• On June 21, Dave Cameron published “Weaver: Better Stuff?”, an article about the velocity and movement on Jeff Weaver’s pitches.
• On June 25, Steve West published “Rangers Rotation Release Points Redux”, an article examining whether the Texas starters were tipping their pitches by varying release points.
• On June 26, John Walsh published “Schilling’s Aching Schoulder”, an article about detecting Curt Schilling’s shoulder injury in the Enhanced Gameday data.
• On June 26, Louis Chao published, in Chinese, “Diggin’ in on the Sinker”, an article looking at sinkerball pitchers.
• On June 26, the following article about pitcher Josh Beckett was published in the Chinese language: http://blog.xuite.net/stfo/blog/12293879
• 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 June 28, Joe P. Sheehan published “Is There Something in the Way It Moves?”, on pitcher Roy Halladay and the consistency of his stuff from start to start.

July 2007 (14 articles)

• On July 2, John Beamer published “A Close Look at Tim Hudson”, an article about pitcher Tim Hudson and classifying his pitches using a statistical clustering function.
• 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 July 5, Dan Fox published “Searching for the Gyroball”, an article about pitcher Daisuke Matsuzaka and classifying his pitches.
• On July 7, Prof Pepper published “Pitch by Pitch: Un Assaggio“, an Italian-language article about pitch location and the strike zone.
• On July 10, ultxmxpx published this list of pitchers and contact rate on their various pitches, which he had classified.
• On July 11, John Walsh 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 12, Steve West published “Pitch Break Angle vs Length”, an article about classifying pitch types using these two new PITCHf/x parameters.
• On July 12, Louis Chao published “Another Look at the Sinker”, an article comparing the two-seam and four-seam fastballs and looking at pitcher A.J. Burnett.
• On July 13, Joe P. Sheehan published “Under Pressure”, on pitchers Jake Peavy and Dan Haren and their pitch selection in high-pressure versus low-pressure situations.
• On July 14, Prof Pepper published “Cosi Si Vincono I Cy Young, Baby!“, an Italian-language article about pitchers Johan Santana and Joe Nathan.
• On July 25, John Walsh published a 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 July 26, Joe P. Sheehan 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 July 29, Bill Ferris published “Comparing Kenny Rogers to Kenny Rogers”, an article about, guess who…You’re right! Kenny Rogers.
• On July 30, Steve West published “Do Pitchers Affect the Strike Zone”, a look at batted ball results plotted against pitch location in the strike zone.

August 2007 (35 articles)

• On August 2, Anthony published “I Love It When a Plan Comes Together”, an article about Jake Peavy making an effort to mix his pitches better.
• On August 3, Chris Constancio 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.
• On August 3, Steve West published “More McCarthy”, an article about pitcher Brandon McCarthy, classifying his pitches.
• On August 7, Steve West 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 8, Dr. Alan Nathan 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 August 9, Steve West published “Random Strike Zones Part 2”, an article investigating the results of pitches to Michael Young.
• On August 10, Joe P. Sheehan 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 13, Dave Cameron published “Jeff Weaver, Junkballer”, an article about Jeff Weaver’s start on August 12th.
• On August 14, I published “What Does Joba Throw?”, an article classifying Joba Chamberlain’s pitches in his August 10th appearance.
• On August 16, Dan Fox 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 16, Steve West 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 17, Joe P. Sheehan published “May I Have Seconds”, an article about calculating pitched ball trajectories.
• On August 20, Steve West 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 22, Harry Pavlidis published “Rich Hill’s Four Pitches”, an article classifying, not surprisingly, Rich Hill’s pitches.
• 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
• On August 22, I published “Brandon Webb, Pitch Mixer Extraordinaire?”, an article looking at the pitch selection by Brandon Webb.
• On August 23, Dan Fox published “Visualizing Pitches”, an article looking at pitch trajectories in three dimensions.
• On August 23, Harry Pavlidis published “Rich Hill – Numbers”, an article looking at the results of Hill’s pitches.
• On August 23, I published “How to Build a Pitch Database”, a work-in-progress description of how I built my database.
• On August 24, Joe P. Sheehan 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 24, Harry Pavlidis published “Micah Owings”, an article classifying the pitches of Micah Owings.
• On August 25, Dan Fox published “Jimenez Delivers”, an article about Ubaldo Jimenez’s August 25th start.
• On August 26, Harry Pavlidis 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 27, Dan Fox published “Changeup Challenged”, an article classifying Billy Wagner’s pitches.
• On August 27, mb22414 published “Jake Peavy: Pitch Variation and Velocity”, an article looking at pitcher Jake Peavy and his pitch selection.
• On August 28, mb22414 published “Classifying Peavy’s Pitches”, an article about Jake Peavy’s pitch types in his August 22nd start.
• On August 29, Harry Pavlidis 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 30, Steve West published “Danks but No Danks”, an article looking at pitcher John Danks and classifying his pitches.
• On August 30, Josh Kalk published “Sheets Returns from the DL”, an article looking at Ben Sheets’ start on August 29th.
• On August 30, Josh Kalk published “Fielder Hit Chart”, an article showing Prince Fielder’s hits by pitch location.
• On August 31, Harry Pavlidis 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, Harry Pavlidis published “Patton Preview”, an article looking at Astros’ pitcher Troy Patton.
• On August 31, Whither published a Chinese-language article about Chien-Ming Wang’s start against Boston on August 30th: http://blog.roodo.com/Whither/archives/4052827.html
• On August 31, Joe P. Sheehan 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 August 31, Josh Kalk 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.

September 2007 (69 articles)

• On September 1, Harry Pavlidis published “Patton vs. Wandy”, an article about pitchers Troy Patton and Wandy Rodriguez.
• On September 2, Harry Pavlidis published “Other Side of Hill”, an article showing Rich Hill’s pitch location versus pitch type.
• On September 2, Harry Pavlidis published “Fooled by Hill”, an article about strike zone calls on Rich Hill’s various pitch types.
• On September 2, Harry Pavlidis published “Hill ≠ Marshall“, an article comparing pitchers Rich Hill and Sean Marshall.
• On September 2, Harry Pavlidis published “Marmol”, an article about pitcher Carlos Marmol.
• On September 2, Josh Kalk published “Estrada Hit Chart”, an article showing hits by pitch location and ball/strike chart for Johnny Estrada.
• On September 3, Josh Kalk 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 3, Harry Pavlidis published “Stults – Trial Balloon”, an article showing 3-D pitch trajectory plots for pitcher Eric Stults.
• On September 4, John Walsh published “Squaring It Up”, an article examining the results of pitches in and out of the strike zone.
• On September 4, Harry Pavlidis published “Dodgers v Cubs”, an article about pitch types thrown by the Dodgers’ rotation: Brad Penny, Derek Lowe, Esteban Loaiza, Eric Stults.
• On September 5, Josh Kalk 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, Josh Kalk published “Somewhat Pretty Pictures”, an article about correcting for park differences in horizontal and vertical initial position.
• On September 6, Dan Fox published “Wily Mo Redux”, an article about Wily Mo Pena, including how he has hit various pitches in different counts and locations.
• On September 6, Josh Kalk 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 7, mb22414 published “Another Look at Jake Peavy”, an article looking at Jake Peavy’s September 5th start and classifying his pitches.
• On September 7, Joe P. Sheehan published “That Sinking Feeling: Part Deux”, an article examining the relationship between sinkers and ground balls.
• On September 7, I published “Magnus Papelbonus”, an article about pitcher Jonathan Papelbon and techniques for classifying pitches by spin direction.
• On September 8, Steve West published “Switching on a Lightbulb”, an article about pitcher Edinson Volquez.
• On September 9, Harry Pavlidis 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, I published “Papelbon Redux“, an update to my previous article about Jonathan Papelbon with pitch classification and park variance data.
• On September 10, Harry Pavlidis published “A Matter of Style and Judgment“, an article about hitters’ strike zone judgment.
• On September 11, Harry Pavlidis published “Aiming High“, an article about hitters’ contact rates and home runs on high pitches.
• On September 11, Josh Kalk 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 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, Josh Kalk 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 12, I published “Mad Dog Mishmash“, an article classifying pitch types for Greg Maddux.
• On September 12, Ike Hall 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, Ike Hall published “Thinking about Calibration“, an article about PITCHf/x calibration procedures.
• On September 13, Dan Fox published “Return of the Fish Eye“, an article updating his previous article on plate discipline.
• On September 13, Josh Kalk published “Progress. Errrr, Sort of.“, an article updating the results from his pitch classification algorithm.
• On September 13, Joe P. Sheehan 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 14, Bill Ferris published “Fish Eye on the Tigers“, an article about the Detroit Tiger hitters’ plate discipline.
• On September 14, Josh Kalk 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 14, I published “In the Land of Submariners“, an article classifying pitch types for Chad Bradford.
• On September 14, Jonathan Hale published “A.J. Burnett Pitch Analysis–Then and Now“, an article about pitcher A.J. Burnett.
• On September 15, Harry Pavlidis published “Swing Low (Sweet Chariot) Geoff Jenkins“, an article about hitters’ contact rates and home runs on low pitches.
• On September 15, Bill Ferris published “Jair Jurrjens 9/11 Start versus Texas“, an article examining his pitch breakdown and results from that start.
• On September 16, Whither 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 September 16, Steve West published “The Young Strike Zone, Part 3“, an article in his series examining strike zone charts for Michael Young.
• On September 16, Harry Pavlidis published “Clusters“, an article about using k-means cluster analysis to classify pitch types.
• On September 16, Harry Pavlidis published “Ted Lilly Clusters“, an article applying k-means cluster analysis to classify pitch types for Ted Lilly.
• On September 17, Bill Ferris published “Jair Jurrjens 9/16 Start against the Twins“, an article examining his pitch breakdown and results from that start.
• On September 17, Ike Hall published “More PITCHfx Thoughts“, an article with further thoughts about PITCHf/x calibration procedures and trajectory calculation.
• On September 17, Harry Pavlidis 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, Harry Pavlidis published “Arroyo Clusters“, an article classifying pitch types for Bronson Arroyo.
• 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 September 19, Justin inAZ published “PITCHf/x Plots for Harang and Arroyo“, an article discussing pitch classification plots for pitchers Aaron Harang and Bronson Arroyo.
• On September 19, Harry Pavlidis published “Tonight’s Opponent: Tom Shearn“, an article classifying pitch types for Tom Shearn.
• On September 19, Harry Pavlidis 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 19, John Walsh published “Pitch Identification Tutorial“, as its title indicates, a tutorial about pitch types, including pitch charts for about 150 pitchers.
• On September 19, Josh Kalk 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, Josh Kalk 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 20, mb22414 published “Catching Up on All Things PITCHf/x“, an article about Jake Peavy’s pitch types.
• On September 20, Jonathan Hale published “Jesse Litsch Is 22 Years Old“, an article looking at pitch types for three of Jesse Litsch’s starts.
• On September 21, Joe P. Sheehan 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 22, mb22414 published “Checking in on Pedro“, an article about pitcher Pedro Martinez’s performance since returning from surgery.
• On September 22, Harry Pavlidis published “Hello Soto“, an article with a strike zone chart for Geovany Soto.
• On September 22, Harry Pavlidis published “Local Kid, Probably a Sox Fan“, an article looking at pitch types for Tom Gorzelanny.
• On September 24, Ike Hall published “More Calibration Thoughts“, an article with additional thoughts about PITCHf/x calibration procedures.
• On September 24, Justin inAZ 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.
• On September 25, Harry Pavlidis published “Up Next: Dan Barone“, an article about pitch Dan Barone, examining his pitch types using spin rate graphs.
• On September 25, Jonathan Hale published “Jesse Litsch–What Went Right?“, an article about Jesse Litsch’s September 25th start.
• On September 26, Harry Pavlidis published “Peskiest of the Fish“, an article about a Jeremy Hermida at bat on September 25th.
• On September 26, Harry Pavlidis published “Peskiest of the Fish Part 2“, an article about two Jeremy Hermida at bats on September 25th.
• On September 27, Dan Fox published “A Mailbag Double Play“, an article including updates to his Fish/Eye charts for hitters.
• On September 27, mb22414 published “A New Jake Peavy for a Day“, an article about Jake Peavy’s September 26th start.
• On September 27, Josh Kalk published “Player Cards for Batters Now Available“, an article announcing the availability of his batter strike zone charts and results by pitch type.
• On September 28, Joe P. Sheehan published “Scouting Jake Peavy“, an article profiling pitcher Jake Peavy.
• On September 29, Jonathan Hale published “Dustin McGowan–Dissection of a Masterpiece“, an article about Dustin McGowan’s May 28th and June 24th starts.

October 2007 (48 articles)

• On October 2, Jonathan Hale published “Something You Already Knew about John McDonald”, an article about John McDonald’s batting results for different pitch types and speeds.
• On October 2, MLB’s Mark Newman published “Pitch-f/x Adds Insight to Watching Games“, an article about the PITCHf/x camera system with details about the setup process.
• On October 2, I published “Going, Going, Gagne!“, an article classifying pitch types for Eric Gagne.
• On October 3, Ike Hall published “Finding the Zone“, an article about strike zone measurement accuracy by park.
• On October 3, I published “Gagne Fishing“, an article with strike zone charts by pitch type for Eric Gagne.
• 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 4, Josh Kalk published “A Closer Look at Jeff Francis’ Start Against the Phillies“, an article about Jeff Francis’ October 3rd playoff start.
• On October 4, Harry Pavlidis published “Cubs v Davis“, an article classifying pitch types for Doug Davis.
• On October 4, Josh Kalk published “Was Manny Corpas Doctoring the Ball?“, an article about the October 3rd Divison Series relief appearance by Manny Corpas.
• 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 5, Dan Fox published “Carmona’s Trend“, an article looking at Fausto Carmona’s pitch mix.
• On October 6, Harry Pavlidis published “Livan’s Bag-o-Tricks“, an article classifying pitch types for Livan Hernandez.
• On October 6, Harry Pavlidis published “Hill’s Curve and the Weather“, an article examining the effect of weather conditions on the break of Rich Hill’s curveball.
• On October 6, Jonathan Hale published “Did Pitchers Adapt to Alex Rios?“, an article showing strike zone hitting charts for Alex Rios.
• On October 7, Dan Fox 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 8, Jonathan Hale published “Vernon Wells vs. the First Pitch“, an article examining the first pitch results for Vernon Wells.
• On October 9, Whither published “For Gameday Regulars Only“, an article about Chien-Ming Wang’s pitch mix.
• On October 11, Dan Fox published “On Atmosphere, Probability, and Prediction“, an article about weather effects on pitched baseballs.
• On October 10, Josh Kalk published “Anatomy of a Player: Albert Pujols“, an article examining Albert Pujols’ hitting performance by pitch type.
• On October 12, Joe P. Sheehan published “Beckett vs. Sabathia“, an article classifying pitches and examining pitching strategies for Josh Beckett and C.C. Sabathia.
• On October 12, Doug Gray published “Breaking Down Homer Bailey Part 1“, an article looking at Homer Bailey’s curveball.
• On October 13, Doug Gray published “Breaking Down Homer Bailey Part 2“, an article looking at Homer Bailey’s fastball.
• On October 13, Jonathan Hale 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 14, Doug Gray published “Breaking Down Homer Bailey Part 3“, an article looking at Homer Bailey’s changeup.
• On October 15, Jonathan Hale 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, Jonathan Hale 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, Jonathan Hale 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, Jonathan Hale published “FOX Pitchtracker’s Strike Zone Is Brutal“, an article comparing the FOX Pitchtracker strike zone to PITCHf/x data.
• On October 19, Jonathan Hale published “Beckett’s Gem Keeps Boston Alive“, an article about Josh Beckett’s American League Championship Series Game 5 start.
• On October 19, Joe P. Sheehan published “Pitch Sequencing“, an article examining pitch sequences for Josh Beckett, C.C. Sabathia, and Greg Maddux.
• On October 21, Jonathan Hale published “Pitching on Fumes“, an article about Curt Schilling’s Game 6 start in the ALCS.
• On October 21, Jonathan Hale published “Carmona Got Squeezed“, an article about the called strike zone for Fausto Carmona’s October 20th ALCS start.
• On October 22, Jonathan Hale published “What Happened to Hafner?“, an article about the pitches that Travis Hafner saw in the ALCS.
• On October 24, Eric Van posted a pitch type breakdown of Jeff Francis to the Sons of San Horn message board. See posts #14 and #17.
• 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, Eric Van posted a pitch type breakdown of Ubaldo Jimenez to the Sons of San Horn message board. See post #25.
• 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 25, Dan Fox published “Free Stuff and the Men in Blue“, an article about the shape of the called strike zone in the playoffs.
• On October 25, Jonathan Hale published “Worst. Outing. Ever.“, an article about Ryan Speier’s World Series Game 1 performance.
• On October 25, Jonathan Hale published “Jeff Francis off to a Rocky Start in the World Series“, an article about the postseason performance of Jeff Francis.
• On October 26, Dan Fox published “Game Two Notes“, including a section on the consistency of Ubaldo Jimenez’s release point.
• On October 26, Joe P. Sheehan published “Pitch Frequency“, an article looking at fastball pitch frequency for pitchers in different ball-strike counts.
• 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 27, Dan Fox published “Sliders but no Gyro“, an article looking at Daisuke Matsuzaka’s pitch mix.
• On October 27, Eric Van posted a pitch type breakdown of Josh Fogg to the Sons of San Horn message board. See post #32.
• 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, 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 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.
• On October 30, Eric Van 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.

November 2007 (19 articles)

• On November 1, John Walsh published “Don’t Blame Pedro“, an article classifying pitches and examining pitching strategies for Pedro Martinez.
• On November 2, Joe P. Sheehan published “Pitching to the Hitter“, an article examining fastball pitch frequency seen by hitters based on their slugging ability.
• On November 6, I published “Bend It like Beckett“, an article classifying pitches for Josh Beckett.
• On November 12, Josh Kalk published “Explanation of the Correction Code“, an article describing his method for correcting park-related inconsistencies in the PITCHf/x data.
• On November 12, Josh Kalk published “Classification Algorithm Explained“, an article explaining his algorithm for classifying pitches for his player cards.
• On November 12, I published “Meanwhile, Beckett the Ranch…“, an article with strike zone charts by pitch type for Josh Beckett.
• On November 14, Josh Kalk published “Web-based PITCHf/x Tool“, an article introducing a web-based tool to query his PITCHf/x database.
• On November 15, I published “Appeasement“, an article classifying pitches for Joba Chamberlain.
• On November 16, Joe P. Sheehan published “Predicting Pitches“, an article examining the percentage of fastballs thrown in different situations.
• 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 November 20, Josh Kalk published “Anatomy of a Player: Tom Glavine“, an article classifying Tom Glavine’s pitches and charting the strike zone location of his fastballs.
• On November 21, Jonathan Hale published “A Gentle Massage“, an article investigating whether better pitchers get more strike zone calls in their favor.
• On November 23, Joe P. Sheehan 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 26, Jonathan Hale published “Out of the Zone“, an article looking at out of strike zone swing tendencies for hitters.
• On November 27, Jonathan Hale published “Garbage Picking“, an article looking at out of zone tendencies for Toronto Blue Jays hitters.
• On November 27, John Walsh published “Butterflies Are Not Bullets“, an article examining pitcher Tim Wakefield.
• On November 28, Jonathan Hale published “Missing Corners“, an article about the shape of the strike zone as actually called.
• On November 28, Jonathan Hale published “A Zone of Their Own“, an article about the size of umpire strike zones.
• On November 30, Joe P. Sheehan published “Dirty Jobs“, an article examining fastball percentage and pitch location in various ball-strike counts.

December 2007 (20 articles)

• On December 3, Josh Kalk published “Web-based PITCHf/x Tool Help/Comment Page“, an article explaining the updates to the PITCHf/x query tool.
• On December 3, Tom Goyne published “Breaking Down Adam Eaton’s Breaking Ball“, an article looking at the break on Adam Eaton’s curve.
• On December 4, Josh Kalk 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 5, I published “What Does John Smoltz Throw?“, an article classifying pitches for John Smoltz.
• On December 6, Harry Pavlidis published “Jose Ascanio“, an article characterizing pitches for Jose Ascanio.
• On December 9, I published “Tales of the Cutter: Mariano Rivera“, an article classifying pitches and showing strike zone charts for Mariano Rivera.
• On December 10, Joe P. Sheehan published “Dirty Jobs: Part 2“, an article looking at ball-strike percentages for fastballs thrown at different counts.
• On December 13, Josh Kalk 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 December 13, I 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 14, Joe P. Sheehan published “The Same Things“, an article about calculating similarity scores for pitches from different pitchers and a look at pitcher Jared Burton.
• On December 17, Harry Pavlidis published “Winter Pie“, an article looking at what pitches Felix Pie saw and what he swung at.
• On December 18, Dave Cameron published “Carlos Silva“, an article examining Silva’s pitching style based on Josh Kalk’s PITCHf/x data.
• On December 19, Alan Nathan 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 December 19, Jonathan Hale published “Waiting for Their Pitch“, an article about the pitch selection and swing data for all hitters from 2007.
• On December 20, John Walsh 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 December 21, Tom Goyne published “Breaking Down Adam Eaton’s Breaking Ball, Part II“, updating his previous article on the break of Adam Eaton’s curve.
• On December 22, I 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 December 23, Joe P. Sheehan 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 December 30, Jake at BuccoBlog 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 BuccoBlog published “Dejan’s McLouth Pipe-Dream“, an article looking at Nate McLouth’s hitting performance against the slider.

January 2008 (12 articles)

• On January 2, Prof Pepper published “Cosi’ Uguali, Cosi’ Diversi (Part 1)“, an Italian-language article looking for the most unique curveballs in major league baseball.
• On January 3, I 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 4, Joe P. Sheehan published “Old Man River“, an article looking at the performance characteristics of old pitchers versus young pitchers.
• On January 5, Prof Pepper published “Cosi’ Uguali, Cosi’ Diversi (Part 2)“, an Italian-language article looking for the most unique fastballs in major league baseball.
• On January 6, Harry Pavlidis 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 9, I 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 10, Joe P. Sheehan published “Grouping Maddness“, an article comparing the fastball and slider performance of hard-throwing and soft-tossing old and young pitchers.
• On January 11, I 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 13, Harry Pavlidis 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.
• On January 14, I published “A PITCHf/x Primer“, an introduction and tutorial on using and understanding PITCHf/x data and finding resources for further study.
• On January 15, Jonathan Hale 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 15, SG of RLYW published “Pitch F/X and Joba Chamberlain“, an article looking at the results of Joba Chamberlain’s pitches by pitch type.

Current article count is 252 through January 15.