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, catchers, teams and umpires for the 2026 MLB season.
Batter ABS Challenge Leaders
Rank PlayerName Team BatChallSuccess BatChallenges BatChallSuccess% 1 Sal Stewart CIN 19 29 65.5% 2 Kevin McGonigle DET 10 15 66.7% 3 Xander Bogaerts SD 9 12 75.0% 3 Davis Schneider TOR 9 12 75.0% 3 Jose Altuve HOU 9 13 69.2% 3 Kyle Schwarber PHI 9 14 64.3% 3 Maikel Garcia KC 9 14 64.3% 3 Jose Caballero NYY 9 16 56.3% 9 Bryan Reynolds PIT 8 14 57.1% 9 Mark Vientos NYM 8 14 57.1% 9 Munetaka Murakami CWS 8 15 53.3% 9 Gary Sanchez MIL 8 19 42.1% 13 CJ Abrams WSH 7 7 100.0% 13 Teoscar Hernandez LAD 7 10 70.0% 13 Brent Rooker ATH 7 10 70.0% 13 Brayan Rocchio CLE 7 11 63.6% 13 Samuel Basallo BAL 7 11 63.6% 13 Ivan Herrera STL 7 13 53.8% 13 Austin Martin MIN 7 14 50.0% 13 Luke Keaschall MIN 7 14 50.0% 13 Bryce Harper PHI 7 15 46.7% 13 Ronald Acuna Jr. ATL 7 16 43.8% 13 Cam Smith HOU 7 17 41.2%
Catcher ABS Challenge Leaders
Rank PlayerName Team CatChallSuccess CatChallenges CatChallSuccess% 1 William Contreras MIL 49 81 60.5% 2 Tyler Stephenson CIN 37 52 71.2% 3 Nick Fortes TB 34 58 58.6% 4 Salvador Perez KC 33 44 75.0% 4 Dillon Dingler DET 33 47 70.2% 4 Hunter Goodman COL 33 51 64.7% 7 Patrick Bailey CLE 32 55 58.2% 7 Edgar Quero CWS 32 66 48.5% 9 Will Smith LAD 31 47 66.0% 9 Shea Langeliers ATH 31 53 58.5% 11 Victor Caratini MIN 30 45 66.7% 11 Austin Wells NYY 30 48 62.5% 11 Logan O’Hoppe LAA 30 52 57.7% 14 Carson Kelly CHC 27 32 84.4% 15 Pedro Pages STL 25 35 71.4% 16 Liam Hicks MIA 24 43 55.8% 17 Miguel Amaya CHC 23 35 65.7% 18 Agustin Ramirez MIA 22 31 71.0% 18 Ryan Jeffers MIN 22 36 61.1% 18 Freddy Fermin SD 22 40 55.0%
MLB Team ABS Challenge Rankings
Team BatChallSuccess% Pitch/CatchChallSuccess% TotChallSuccess% Arizona Diamondbacks 54.5% (2) 65.5% (5) 60.2% (1) Athletics 54.5% (2) 58.5% (18) 56.9% (9) Atlanta Braves 38.3% (29) 61.0% (12) 51.4% (19) Baltimore Orioles 52.1% (9) 46.8% (30) 50.0% (23) Boston Red Sox 41.4% (26) 57.4% (20) 48.6% (25) Chicago Cubs 45.5% (19) 72.2% (1) 59.4% (4) Chicago White Sox 46.6% (14) 47.6% (28) 47.2% (27) Cincinnati Reds 53.2% (7) 68.3% (3) 59.9% (2) Cleveland Guardians 37.2% (30) 52.7% (23) 44.7% (29) Colorado Rockies 41.3% (27) 61.4% (11) 52.1% (18) Detroit Tigers 50.7% (10) 70.7% (2) 59.5% (3) Houston Astros 57.7% (1) 48.0% (26) 52.7% (16) Kansas City Royals 53.4% (6) 60.9% (13) 57.9% (7) Los Angeles Angels 42.5% (22) 58.3% (19) 51.0% (22) Los Angeles Dodgers 52.6% (8) 63.2% (7) 58.4% (6) Miami Marlins 54.2% (5) 58.6% (17) 57.3% (8) Milwaukee Brewers 41.7% (25) 60.4% (14) 54.4% (12) Minnesota Twins 46.0% (17) 62.0% (10) 54.2% (13) New York Mets 49.2% (11) 55.4% (22) 52.5% (17) New York Yankees 48.6% (12) 59.0% (16) 53.9% (14) Philadelphia Phillies 46.4% (15) 62.3% (8) 53.8% (15) Pittsburgh Pirates 38.6% (28) 47.3% (29) 42.4% (30) San Diego Padres 45.8% (18) 62.0% (9) 55.9% (11) San Francisco Giants 46.3% (16) 50.0% (25) 48.1% (26) Seattle Mariners 41.8% (24) 60.0% (15) 51.4% (19) St. Louis Cardinals 42.3% (23) 67.2% (4) 56.3% (10) Tampa Bay Rays 44.1% (20) 56.1% (21) 51.1% (21) Texas Rangers 54.4% (4) 63.5% (6) 58.7% (5) Toronto Blue Jays 48.4% (13) 50.9% (24) 49.6% (24) Washington Nationals 43.1% (21) 47.9% (27) 45.8% (28)
Umpire ABS Challenge Leaders
Rank UmpireName Chal ChalW Chal% P 1 Dillon Wilson 6 1 16.7% 864 2 Louie Krupa 28 9 32.1% 1737 3 Dexter Kelley 27 9 33.3% 1832 4 Tyler Jones 27 10 37.0% 1973 5 Derek Thomas 40 15 37.5% 2762 6 Erich Bacchus 34 13 38.2% 3649 7 Emil Jimenez 39 15 38.5% 2929 8 David Rackley 53 21 39.6% 4099 9 Edwin Jimenez 24 10 41.7% 2181 10 Scott Barry 43 18 41.9% 3430 11 John Tumpane 50 21 42.0% 4001 12 Nic Lentz 57 24 42.1% 3955 13 Mark Ripperger 52 22 42.3% 3943 14 James Hoye 49 21 42.9% 3562 14 John Libka 35 15 42.9% 3475 16 James Jean 48 21 43.8% 3817 17 Alex Tosi 45 20 44.4% 3937 18 Adam Beck 58 26 44.8% 3883 19 Austin Jones 41 19 46.3% 2754 20 Jonathan Parra 28 13 46.4% 2205 21 Quinn Wolcott 58 27 46.6% 4141 22 Jansen Visconti 45 21 46.7% 3451 23 Ryan Additon 61 29 47.5% 3696 24 Nate Tomlinson 42 20 47.6% 3840 25 Shane Livensparger 44 21 47.7% 3140 26 Jordan Baker 46 22 47.8% 3682 26 Steven Jaschinski 23 11 47.8% 1398 29 Vic Carapazza 54 26 48.1% 4234 28 Edwin Moscoso 52 25 48.1% 3578 30 Chris Conroy 43 21 48.8% 3396 31 Dan Merzel 45 22 48.9% 3233 32 Will Little 58 29 50.0% 3846 32 Bruce Dreckman 56 28 50.0% 4005 32 Tom Hanahan 56 28 50.0% 3942 32 Lance Barksdale 48 24 50.0% 3514 36 Chris Guccione 67 34 50.7% 3964 37 Mark Wegner 49 25 51.0% 3851 37 Jeremie Rehak 49 25 51.0% 3255 37 Ryan Blakney 49 25 51.0% 3723 37 Ryan Wills 49 25 51.0% 3465 41 Adam Hamari 45 23 51.1% 3785 42 Nick Mahrley 35 18 51.4% 2999 43 Carlos Torres 48 25 52.1% 3747 43 Alex MacKay 48 25 52.1% 3380 43 Nestor Ceja 48 25 52.1% 3590 46 Junior Valentine 46 24 52.2% 3221 47 Brennan Miller 53 28 52.8% 3933 48 D.J. Reyburn 51 27 52.9% 3419 49 Tripp Gibson 49 26 53.1% 3971 50 Brian O’Nora 41 22 53.7% 2830 51 Alan Porter 48 26 54.2% 3340 52 Mike Muchlinski 46 25 54.3% 3540 53 Jen Pawol 33 18 54.5% 2098 54 Bill Miller 51 28 54.9% 3894 55 Cory Blaser 47 26 55.3% 3093 56 Laz Diaz 73 41 56.2% 4255 57 Paul Clemons 39 22 56.4% 3449 58 Dan Bellino 60 34 56.7% 3773 58 Malachi Moore 60 34 56.7% 4183 60 Brock Ballou 37 21 56.8% 2598 61 Roberto Ortiz 51 29 56.9% 3303 62 Charlie Ramos 42 24 57.1% 2286 63 Marvin Hudson 40 23 57.5% 3347 64 Gabe Morales 45 26 57.8% 3052 64 Ben May 45 26 57.8% 3663 66 Sean Barber 57 33 57.9% 3520 67 Chad Fairchild 53 31 58.5% 3563 68 Chad Whitson 46 27 58.7% 3127 69 Alfonso Márquez 39 23 59.0% 3296 70 Adrian Johnson 37 22 59.5% 2285 71 Doug Eddings 50 30 60.0% 3655 72 Ramon De Jesus 48 29 60.4% 2677 73 Dan Iassogna 59 36 61.0% 3888 74 Lance Barrett 67 41 61.2% 4042 75 Jim Wolf 44 27 61.4% 2931 76 Rob Drake 57 35 61.4% 3969 77 Mike Estabrook 52 32 61.5% 3552 78 Willie Traynor 47 29 61.7% 3785 79 Hunter Wendelstedt 66 41 62.1% 3598 79 Manny Gonzalez 66 41 62.1% 3824 81 John Bacon 45 28 62.2% 2203 82 Ron Kulpa 32 20 62.5% 1774 83 Brian Walsh 51 32 62.7% 3097 84 Chris Segal 57 36 63.2% 3588 85 Stu Scheurwater 52 33 63.5% 3286 86 Jacob Metz 41 27 65.9% 2074 87 Todd Tichenor 43 29 67.4% 3334 88 Clint Vondrak 40 27 67.5% 3196 89 Andy Fletcher 40 29 72.5% 2790 90 CB Bucknor 9 7 77.8% 674 91 Felix Neon 15 12 80.0% 578
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