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.
Data updated through Friday, July 24.
Batter ABS Challenge Leaders Catcher ABS Challenge Leaders MLB Team ABS Challenge Rankings Umpire ABS Challenge Leaders Rank Name Challenged Overturned Overturn% P 1 Louie Krupa 36 12 33.3% 2334 2 Dillon Wilson 20 7 35.0% 2028 3 Dexter Kelley 53 20 37.7% 3552 4 Derek Thomas 63 24 38.1% 4231 5 Edwin Jimenez 28 11 39.3% 2458 6 Emil Jimenez 62 25 40.3% 4969 7 Mark Ripperger 88 36 40.9% 6317 8 John Libka 57 24 42.1% 5230 9 Nic Lentz 83 35 42.2% 6070 10 Will Little 80 34 42.5% 5877 11 Erich Bacchus 61 26 42.6% 5699 12 Scott Barry 60 26 43.3% 4911 13 James Jean 62 27 43.5% 4996 14 David Rackley 78 34 43.6% 6249 15 Jonathan Parra 32 14 43.8% 2487 16 Jansen Visconti 70 31 44.3% 5196 17 Austin Jones 56 25 44.6% 4151 18 Quinn Wolcott 85 39 45.9% 6176 19 Alex Tosi 76 35 46.1% 5624 20 Adam Beck 91 42 46.2% 6010 21 Ryan Additon 101 47 46.5% 6204 22 Chris Conroy 66 31 47.0% 5261 23 Edwin Moscoso 85 40 47.1% 5799 24 Shane Livensparger 72 34 47.2% 4895 25 Mark Wegner 76 36 47.4% 5737 26 Adam Hamari 67 32 47.8% 5898 27 Vic Carapazza 81 39 48.1% 6521 28 Tripp Gibson 70 34 48.6% 5815 29 D.J. Reyburn 75 37 49.3% 4842 30 James Hoye 88 44 50.0% 5838 30 Nestor Ceja 86 43 50.0% 6036 30 Tyler Jones 58 29 50.0% 3754 30 Steven Jaschinski 44 22 50.0% 2814 34 Jeremie Rehak 75 38 50.7% 5060 35 Nate Tomlinson 67 34 50.7% 5630 36 Nick Mahrley 59 30 50.8% 5180 36 Carlos Torres 59 30 50.8% 4825 38 Ryan Wills 92 47 51.1% 5814 39 Tom Hanahan 78 40 51.3% 5575 40 Chad Fairchild 77 40 51.9% 5276 41 Ryan Blakney 73 38 52.1% 5121 42 Gabe Morales 68 36 52.9% 4886 43 Dan Merzel 79 42 53.2% 5346 44 John Tumpane 80 43 53.8% 5689 45 Junior Valentine 76 41 53.9% 5637 46 Mike Muchlinski 74 40 54.1% 5796 47 Alan Porter 77 42 54.5% 5130 48 Sean Barber 86 47 54.7% 5267 49 Jordan Baker 82 45 54.9% 5746 50 Brennan Miller 71 39 54.9% 5567 51 Ben May 60 33 55.0% 5411 52 Chris Guccione 87 48 55.2% 5324 52 Brock Ballou 58 32 55.2% 3739 54 Charlie Ramos 81 45 55.6% 4443 55 Ramon De Jesus 84 47 56.0% 4936 56 Doug Eddings 75 42 56.0% 5635 57 Brian O'Nora 66 37 56.1% 4276 58 Chad Whitson 73 41 56.2% 5141 59 Hunter Wendelstedt 104 59 56.7% 5747 60 Jim Wolf 81 46 56.8% 4929 61 Alfonso Márquez 79 45 57.0% 5745 62 Clint Vondrak 70 40 57.1% 5095 62 Jen Pawol 56 32 57.1% 3209 64 Paul Clemons 75 43 57.3% 5789 65 Lance Barrett 107 62 57.9% 6204 66 Marvin Hudson 55 32 58.2% 4434 67 Bruce Dreckman 91 53 58.2% 5882 68 Malachi Moore 103 60 58.3% 6338 69 Willie Traynor 73 43 58.9% 6413 70 Roberto Ortiz 76 45 59.2% 4996 71 Dan Bellino 86 51 59.3% 5796 72 Bill Miller 91 54 59.3% 5972 73 Cory Blaser 74 44 59.5% 4940 74 Rob Drake 79 47 59.5% 6019 75 Laz Diaz 99 59 59.6% 6082 76 Jacob Metz 57 34 59.6% 3214 77 Manny Gonzalez 83 50 60.2% 5181 78 Ron Kulpa 58 35 60.3% 3585 79 Mike Estabrook 89 54 60.7% 5798 80 Alex MacKay 84 51 60.7% 5541 81 Adrian Johnson 65 40 61.5% 4010 81 Brian Walsh 78 48 61.5% 4920 83 Lance Barksdale 94 58 61.7% 5811 84 Chris Segal 93 58 62.4% 5629 85 Felix Neon 40 25 62.5% 1782 86 Stu Scheurwater 84 53 63.1% 5558 87 Dan Iassogna 98 62 63.3% 5934 87 John Bacon 49 31 63.3% 2526 89 Todd Tichenor 68 45 66.2% 5038 90 Andy Fletcher 62 44 71.0% 3928 91 CB Bucknor 9 7 77.8% 674
