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 Leaders

RankNamePitches
ChallengedCalls
OverturnedOverturn
RatePitches
Called 1 Erich Bacchus 5 0 0.0% 632 1 John Libka 1 0 0.0% 237 3 Will Little 10 1 10.0% 919 4 John Tumpane 7 1 14.3% 603 5 Derek Thomas 5 1 20.0% 363 5 Emil Jimenez 5 1 20.0% 299 7 Jordan Baker 8 2 25.0% 834 7 Chris Conroy 4 1 25.0% 662 7 Roberto Ortiz 4 1 25.0% 281 10 Quinn Wolcott 7 2 28.6% 916 10 Ryan Additon 7 2 28.6% 649 12 Nestor Ceja 9 3 33.3% 872 12 Shane Livensparger 6 2 33.3% 609 12 Stu Scheurwater 6 2 33.3% 581 12 Mike Muchlinski 3 1 33.3% 517 12 James Jean 3 1 33.3% 299 12 Edwin Jimenez 3 1 33.3% 274 18 David Rackley 14 5 35.7% 1203 19 Vic Carapazza 11 4 36.4% 923 19 D.J. Reyburn 11 4 36.4% 648 19 Ramon De Jesus 11 4 36.4% 634 22 Adam Beck 8 3 37.5% 598 22 Edwin Moscoso 8 3 37.5% 666 24 Nic Lentz 13 5 38.5% 729 24 Rob Drake 13 5 38.5% 903 26 Alan Porter 5 2 40.0% 541 27 Lance Barksdale 12 5 41.7% 888 28 Gabe Morales 7 3 42.9% 569 28 Jansen Visconti 7 3 42.9% 553 28 Jeremie Rehak 7 3 42.9% 570 31 Ben May 9 4 44.4% 664 31 Alex Tosi 9 4 44.4% 519 33 Nick Mahrley 11 5 45.5% 925 33 Malachi Moore 11 5 45.5% 870 35 Ryan Blakney 13 6 46.2% 856 36 Carlos Torres 12 6 50.0% 921 36 Todd Tichenor 10 5 50.0% 886 36 Hunter Wendelstedt 8 4 50.0% 499 36 Marvin Hudson 8 4 50.0% 817 36 Mark Ripperger 8 4 50.0% 635 36 Chris Guccione 6 3 50.0% 615 36 Willie Traynor 6 3 50.0% 664 36 Alex MacKay 2 1 50.0% 263 44 Bruce Dreckman 15 8 53.3% 935 45 Tripp Gibson 13 7 53.8% 1005 46 Tom Hanahan 9 5 55.6% 611 47 Brian O’Nora 14 8 57.1% 973 47 Dan Merzel 7 4 57.1% 563 47 Brennan Miller 7 4 57.1% 631 47 Steven Jaschinski 7 4 57.1% 324 51 Manny Gonzalez 12 7 58.3% 634 52 Scott Barry 5 3 60.0% 608 52 Laz Diaz 15 9 60.0% 854 52 Lance Barrett 15 9 60.0% 868 55 Doug Eddings 13 8 61.5% 894 55 Charlie Ramos 13 8 61.5% 872 57 Alfonso Márquez 8 5 62.5% 789 58 Bill Miller 11 7 63.6% 840 59 Dan Iassogna 17 11 64.7% 1172 60 Dan Bellino 15 10 66.7% 855 60 Adam Hamari 6 4 66.7% 564 60 Brian Walsh 3 2 66.7% 250 63 Mark Wegner 13 9 69.2% 917 64 Chad Fairchild 10 7 70.0% 574 65 Adrian Johnson 17 12 70.6% 1013 66 James Hoye 7 5 71.4% 605 66 Ryan Wills 7 5 71.4% 645 66 Nate Tomlinson 7 5 71.4% 608 69 Cory Blaser 8 6 75.0% 615 69 Sean Barber 4 3 75.0% 322 71 CB Bucknor 9 7 77.8% 674 71 Paul Clemons 9 7 77.8% 538 73 Ron Kulpa 14 11 78.6% 683 74 Mike Estabrook 15 12 80.0% 873 74 Junior Valentine 5 4 80.0% 567 76 Chris Segal 17 14 82.4% 859 77 Andy Fletcher 17 15 88.2% 905 78 Chad Whitson 11 10 90.9% 576 79 Jim Wolf 3 3 100.0% 274 79 Brock Ballou 2 2 100.0% 247 79 Clint Vondrak 2 2 100.0% 573