Major League Baseball implemented the ABS challenge system for the 2026 season, which allows players to challenge a ball or strike call made by the plate umpire. Each team receives two challenges to start the game, and only batters, pitchers and catchers can challenge a call. If a team wins a challenge, it can keep challenging. If a team challenges incorrectly twice, it loses its challenges for the rest of the game.
Here are the ABS challenge system rankings for batters, pitchers, catchers, teams and umpires for the 2026 MLB season.
Data updated through Wednesday, April 8.
Batter ABS Challenge LeadersPitcher ABS Challenge LeadersCatcher ABS Challenge LeadersMLB Team ABS Challenge RankingsUmpire ABS Challenge LeadersRankNamePitches
ChallengedCalls
OverturnedOverturn
RatePitches
Called1Erich Bacchus500.0%6321John Libka100.0%2373Will Little10110.0%9194John Tumpane7114.3%6035Derek Thomas5120.0%3635Emil Jimenez5120.0%2997Jordan Baker8225.0%8347Chris Conroy4125.0%6627Roberto Ortiz4125.0%28110Quinn Wolcott7228.6%91610Ryan Additon7228.6%64912Nestor Ceja9333.3%87212Shane Livensparger6233.3%60912Stu Scheurwater6233.3%58112Mike Muchlinski3133.3%51712James Jean3133.3%29912Edwin Jimenez3133.3%27418David Rackley14535.7%120319Vic Carapazza11436.4%92319D.J. Reyburn11436.4%64819Ramon De Jesus11436.4%63422Adam Beck8337.5%59822Edwin Moscoso8337.5%66624Nic Lentz13538.5%72924Rob Drake13538.5%90326Alan Porter5240.0%54127Lance Barksdale12541.7%88828Gabe Morales7342.9%56928Jansen Visconti7342.9%55328Jeremie Rehak7342.9%57031Ben May9444.4%66431Alex Tosi9444.4%51933Nick Mahrley11545.5%92533Malachi Moore11545.5%87035Ryan Blakney13646.2%85636Carlos Torres12650.0%92136Todd Tichenor10550.0%88636Hunter Wendelstedt8450.0%49936Marvin Hudson8450.0%81736Mark Ripperger8450.0%63536Chris Guccione6350.0%61536Willie Traynor6350.0%66436Alex MacKay2150.0%26344Bruce Dreckman15853.3%93545Tripp Gibson13753.8%100546Tom Hanahan9555.6%61147Brian O’Nora14857.1%97347Dan Merzel7457.1%56347Brennan Miller7457.1%63147Steven Jaschinski7457.1%32451Manny Gonzalez12758.3%63452Scott Barry5360.0%60852Laz Diaz15960.0%85452Lance Barrett15960.0%86855Doug Eddings13861.5%89455Charlie Ramos13861.5%87257Alfonso Márquez8562.5%78958Bill Miller11763.6%84059Dan Iassogna171164.7%117260Dan Bellino151066.7%85560Adam Hamari6466.7%56460Brian Walsh3266.7%25063Mark Wegner13969.2%91764Chad Fairchild10770.0%57465Adrian Johnson171270.6%101366James Hoye7571.4%60566Ryan Wills7571.4%64566Nate Tomlinson7571.4%60869Cory Blaser8675.0%61569Sean Barber4375.0%32271CB Bucknor9777.8%67471Paul Clemons9777.8%53873Ron Kulpa141178.6%68374Mike Estabrook151280.0%87374Junior Valentine5480.0%56776Chris Segal171482.4%85977Andy Fletcher171588.2%90578Chad Whitson111090.9%57679Jim Wolf33100.0%27479Brock Ballou22100.0%24779Clint Vondrak22100.0%573