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 pitcher for those articles written about a particular pitcher.

You can also see the full list of articles by date, and articles by author.

Bronson Arroyo

  • On September 17, Harry Pavlidis published “Arroyo Clusters“, an article classifying pitch types for Bronson Arroyo.
  • 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.

Jose Ascanio

  • On December 6, Harry Pavlidis published “Jose Ascanio“, an article characterizing pitches for Jose Ascanio.

Homer Bailey

Dan Barone

  • On September 25, Harry Pavlidis published “Up Next: Dan Barone“, an article about pitch Dan Barone, examining his pitch types using spin rate graphs.

Josh Beckett

  • 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 26, a Chinese-language article was published about pitcher Josh Beckett: http://blog.xuite.net/stfo/blog/12293879
  • 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 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 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 19, Joe P. Sheehan published “Pitch Sequencing“, an article examining pitch sequences for Josh Beckett, C.C. Sabathia, and Greg Maddux.
  • 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 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 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.

Erik Bedard

Matt Belisle

  • 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.

Joaquin Benoit

  • 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.

Jeremy Bonderman

Chad Bradford

Bill Bray

  • 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.

Clay Buchholz

  • 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”.

Mark Buehrle

A.J. Burnett

Jared Burton

  • 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 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.

Paul Byrd

Chris Capuano

  • 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.

Fausto Carmona

  • On October 5, Dan Fox published “Carmona’s Trend“, an article looking at Fausto Carmona’s pitch mix.
  • On October 21, Jonathan Hale published “Carmona Got Squeezed“, an article about the called strike zone for Fausto Carmona’s October 20th ALCS start.

Joba Chamberlain

  • On August 14, I published “What Does Joba Throw?”, an article classifying Joba Chamberlain’s pitches in his August 10th appearance.
  • 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 January 15, 2008, SG of RLYW published “Pitch F/X and Joba Chamberlain“, an article looking at the results of Joba Chamberlain’s pitches by pitch type.

Roger Clemens

  • 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.

Todd Coffey

  • 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.

Jose Contreras

  • On September 13, Josh Kalk published “Progress. Errrr, Sort of.“, an article updating the results from his pitch classification algorithm.

Aaron Cook

  • 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.

Francisco Cordero

  • 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.

Manny Corpas

John Danks

  • On August 30, Steve West published “Danks but No Danks”, an article looking at pitcher John Danks and classifying his pitches.

Doug Davis

  • On October 4, Harry Pavlidis published “Cubs v Davis“, an article classifying pitch types for Doug Davis.

Zack Duke

Adam Eaton

Josh Fogg

Jeff Francis

Eric Gagne

  • 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.

Yovani Gallardo

  • 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.

Tom Glavine

  • 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.

Tom Gorzelanny

Zack Greinke

  • 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.

Roy Halladay

  • 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.
  • 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 23, Dan Fox published “Visualizing Pitches”, an article looking at pitch trajectories in three dimensions.
  • 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.

Cole Hamels

  • 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.

Aaron Harang

Dan Haren

  • 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 30, Steve West published “Do Pitchers Affect the Strike Zone”, a look at batted ball results plotted against pitch location in the strike zone.

Felix Hernandez

Livan Hernandez

Rich Hill

  • On May 25, Joe P. Sheehan published “Dangerous Curves”, on the break of the curveball and pitchers Barry Zito and Rich Hill.
  • On August 17, Joe P. Sheehan published “May I Have Seconds”, an article about calculating pitched ball trajectories.
  • On August 22, Harry Pavlidis published “Rich Hill’s Four Pitches”, an article classifying, not surprisingly, Rich Hill’s pitches.
  • On August 23, Harry Pavlidis published “Rich Hill – Numbers”, an article looking at the results of those pitches.
  • On August 23, Dan Fox published “Visualizing Pitches”, an article looking at pitch trajectories in three dimensions.
  • 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 16, Harry Pavlidis published “Clusters“, an article about using k-means cluster analysis to classify pitch types.
  • 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.

Trevor Hoffman

  • 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.

Tim Hudson

  • 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.

Phil Hughes

  • 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.

Ubaldo Jimenez

  • On August 25, Dan Fox published “Jimenez Delivers”, an article about Ubaldo Jimenez’s August 25th start.
  • 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 25, Eric Van posted a pitch type breakdown of Ubaldo Jimenez to the Sons of San Horn message board. See post #25.
  • On October 26, Dan Fox published “Game Two Notes“, including a section on the consistency of Ubaldo Jimenez’s release point.

Jair Jurrjens

Scott Kazmir

Hong-Chih Kuo

John Lackey

  • On April 19, Joe P. Sheehan published “More Fun with Enhanced Gameday”, an article about consistency of pitch movement, location, and release points, and classifying pitches for John Lackey.

Jon Lester

  • 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.
  • 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.

Ted Lilly

  • On September 16, Harry Pavlidis published “Ted Lilly Clusters“, an article applying k-means cluster analysis to classify pitch types for Ted Lilly.

Tim Lincecum

  • 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.

Jesse Litsch

Esteban Loaiza

  • 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.

Kameron Loe

Derek Lowe

  • 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 August 23, Dan Fox published “Visualizing Pitches”, an article looking at pitch trajectories in three dimensions.
  • 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 7, Joe P. Sheehan published “That Sinking Feeling: Part Deux”, an article examining the relationship between sinkers and ground balls.

Greg Maddux

  • On September 12, I published “Mad Dog Mishmash“, an article classifying pitch types for Greg Maddux.
  • On October 19, Joe P. Sheehan published “Pitch Sequencing“, an article examining pitch sequences for Josh Beckett, C.C. Sabathia, and Greg Maddux.

Pat Maholm

Gary Majewski

  • 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.

Mike Maroth

Carlos Marmol

  • On September 2, Harry Pavlidis published “Marmol”, an article about pitcher Carlos Marmol.

Sean Marshall

  • On September 2, Harry Pavlidis published Hill ≠ Marshall, an article comparing pitchers Rich Hill and Sean Marshall.

Pedro Martinez

  • On September 22, mb22414 published “Checking in on Pedro“, an article about pitcher Pedro Martinez’s performance since returning from surgery.
  • On November 1, John Walsh published “Don’t Blame Pedro“, an article classifying pitches and examining pitching strategies for Pedro Martinez.

Daisuke Matsuzaka

  • On July 5, Dan Fox published “Searching for the Gyroball”, an article about pitcher Daisuke Matsuzaka and classifying his pitches.
  • On August 23, Dan Fox published “Visualizing Pitches”, an article looking at pitch trajectories in three dimensions.
  • 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 October 27, Dan Fox published “Sliders but no Gyro“, an article looking at Daisuke Matsuzaka’s pitch mix.
  • 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.

Brandon McCarthy

  • 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 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 July 12, Steve West published “Pitch Break Angle vs Length”, and article about classifying pitch types using these two new PITCHf/x parameters.
  • On August 3, Steve West published “More McCarthy”, an article about pitcher Brandon McCarthy, classifying his pitches.

Dustin McGowan

Andrew Miller

Kevin Millwood

Franklin Morales

  • 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”.

Matt Morris

Mike Mussina

  • 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.

Joe Nathan

Hideki Okajima

  • 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.

Micah Owings

  • On August 24, Harry Pavlidis published “Micah Owings”, an article classifying the pitches of Micah Owings.

Vicente Padilla

Jonathan Papelbon

  • 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 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.

Troy Patton

  • On August 31, Harry Pavlidis also published “Patton Preview”, an article looking at Astros’ pitcher Troy Patton.
  • On September 1, Harry Pavlidis published “Patton vs. Wandy”, an article about pitchers Troy Patton and Wandy Rodriguez.

Jake Peavy

Brad Penny

  • 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.

Andy Pettitte

  • 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.

Mariano Rivera

Wandy Rodriguez

  • On September 1, Harry Pavlidis published “Patton vs. Wandy”, an article about pitchers Troy Patton and Wandy Rodriguez.

Kenny Rogers

Kirk Saarloos

  • 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.

C.C. Sabathia

  • 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 19, Joe P. Sheehan published “Pitch Sequencing“, an article examining pitch sequences for Josh Beckett, C.C. Sabathia, and Greg Maddux.

Johan Santana

Curt Schilling

  • 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 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 October 21, Jonathan Hale published “Pitching on Fumes“, an article about Curt Schilling’s Game 6 start in the ALCS.
  • 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.

Ben Sheets

  • 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, Josh Kalk published “Sheets Returns from the DL”, an article looking at Ben Sheets’ start on August 29th.
  • 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 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.

Tom Shearn

  • 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 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.

James Shields

Brian Shouse

  • 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.

Carlos Silva

  • 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 December 18, Dave Cameron published “Carlos Silva“, an article examining Silva’s pitching style based on Josh Kalk’s PITCHf/x data.

John Smoltz

Ian Snell

Joakim Soria

Ryan Speier

  • On October 25, Jonathan Hale published “Worst. Outing. Ever.“, an article about Ryan Speier’s World Series Game 1 performance.

Eric Stults

  • On September 3, Harry Pavlidis published “Stults – Trial Balloon”, an article showing 3-D pitch trajectory plots for pitcher Eric Stults.
  • 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.

Jeff Suppan

  • 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.

Robinson Tejeda

Justin Verlander

  • 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”.

Carlos Villanueva

  • 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.

Edinson Volquez

Tim Wakefield

Billy Wagner

Chien-Ming Wang

David Weathers

  • 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.

Jeff Weaver

  • 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.
  • On June 21, Dave Cameron published “Weaver: Better Stuff?”, an article about the velocity and movement on Jeff Weaver’s pitches.
  • On August 13, Dave Cameron published “Jeff Weaver, Junkballer”, an article about Jeff Weaver’s start on August 12th.

Brandon Webb

Jake Westbrook

C.J. Wilson

  • 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.

Randy Wolf

  • 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.

Jamey Wright

Chris Young

Carlos Zambrano

Barry Zito

  • On May 25, Joe P. Sheehan published “Dangerous Curves”, on the break of the curveball and pitchers Barry Zito and Rich Hill.
  • On August 23, Dan Fox published “Visualizing Pitches”, an article looking at pitch trajectories in three dimensions.
  • 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.

Joel Zumaya

  • On October 26, 2006, Dan Fox published “Information Revolution”, an introductory article about the PITCHf/x system.
  • 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.
  • 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.

Other Pitchers

  • 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 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 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 November 14, Josh Kalk published “Web-based PITCHf/x Tool“, an article introducing a web-based tool to query his PITCHf/x database.
  • 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 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 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.

Last updated January 15, 2008.