Jul 19, 2026, 12:57 AM ET 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 Saturday, July 18.
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 Dexter Kelley 44 16 36.4% 2927 3 Dillon Wilson 16 6 37.5% 1760 4 Derek Thomas 60 23 38.3% 3949 5 Edwin Jimenez 28 11 39.3% 2458 6 Emil Jimenez 58 23 39.7% 4645 7 Nic Lentz 79 32 40.5% 5771 8 Erich Bacchus 58 24 41.4% 5461 9 James Jean 55 23 41.8% 4685 10 John Libka 52 22 42.3% 4977 11 Mark Ripperger 84 36 42.9% 6029 11 Will Little 77 33 42.9% 5590 13 Scott Barry 60 26 43.3% 4911 14 Alex Tosi 62 27 43.5% 5051 15 Jonathan Parra 32 14 43.8% 2487 16 David Rackley 72 32 44.4% 5623 17 Austin Jones 56 25 44.6% 4151 18 Shane Livensparger 64 29 45.3% 4623 19 Jansen Visconti 68 31 45.6% 4894 20 Adam Beck 91 42 46.2% 6010 23 Quinn Wolcott 79 37 46.8% 5853 21 James Hoye 77 36 46.8% 5504 22 Chris Conroy 62 29 46.8% 4917 24 Mark Wegner 76 36 47.4% 5737 25 Ryan Additon 98 47 48.0% 5856 27 Edwin Moscoso 79 38 48.1% 5459 26 Vic Carapazza 77 37 48.1% 6192 28 Adam Hamari 62 30 48.4% 5606 29 Tyler Jones 53 26 49.1% 3394 30 Jordan Baker 71 35 49.3% 5188 30 Tom Hanahan 71 35 49.3% 5319 32 Ryan Wills 84 42 50.0% 5525 32 D.J. Reyburn 70 35 50.0% 4532 32 Tripp Gibson 64 32 50.0% 5445 32 Nick Mahrley 58 29 50.0% 4843 32 Steven Jaschinski 44 22 50.0% 2814 37 Nestor Ceja 81 41 50.6% 5763 38 Jeremie Rehak 75 38 50.7% 5060 39 Nate Tomlinson 67 34 50.7% 5630 40 Carlos Torres 59 30 50.8% 4825 41 Ryan Blakney 73 38 52.1% 5121 42 John Tumpane 76 40 52.6% 5165 43 Gabe Morales 64 34 53.1% 4564 43 Brennan Miller 64 34 53.1% 5037 45 Dan Merzel 79 42 53.2% 5346 46 Sean Barber 80 43 53.8% 5006 47 Junior Valentine 76 41 53.9% 5637 48 Chad Fairchild 74 40 54.1% 4970 49 Ben May 57 31 54.4% 5133 50 Alan Porter 77 42 54.5% 5130 51 Chris Guccione 87 48 55.2% 5324 51 Brock Ballou 58 32 55.2% 3739 53 Mike Muchlinski 68 38 55.9% 5292 54 Clint Vondrak 59 33 55.9% 4796 55 Doug Eddings 73 41 56.2% 5362 56 Charlie Ramos 71 40 56.3% 3752 57 Brian O'Nora 62 35 56.5% 3971 58 Jim Wolf 81 46 56.8% 4929 59 Ramon De Jesus 79 45 57.0% 4703 60 Jen Pawol 56 32 57.1% 3209 61 Paul Clemons 68 39 57.4% 5480 62 Lance Barrett 101 58 57.4% 5933 63 Bruce Dreckman 87 50 57.5% 5590 64 Alfonso Márquez 71 41 57.7% 5173 65 Mike Estabrook 76 44 57.9% 5267 66 Chad Whitson 69 40 58.0% 4865 67 Laz Diaz 91 53 58.2% 5559 68 Bill Miller 84 49 58.3% 5699 68 Marvin Hudson 48 28 58.3% 3857 70 Cory Blaser 70 41 58.6% 4638 71 Hunter Wendelstedt 99 58 58.6% 5405 71 Malachi Moore 99 58 58.6% 6095 73 Rob Drake 71 42 59.2% 5415 74 Roberto Ortiz 76 45 59.2% 4996 75 Dan Bellino 82 49 59.8% 5516 76 Lance Barksdale 83 50 60.2% 5206 76 Manny Gonzalez 83 50 60.2% 5181 78 Alex MacKay 78 47 60.3% 5268 79 Ron Kulpa 58 35 60.3% 3585 80 Jacob Metz 51 31 60.8% 2914 81 Willie Traynor 69 42 60.9% 6074 82 Brian Walsh 78 48 61.5% 4920 83 Adrian Johnson 58 36 62.1% 3675 84 Felix Neon 27 17 63.0% 1186 85 Dan Iassogna 98 62 63.3% 5934 85 John Bacon 49 31 63.3% 2526 87 Chris Segal 82 52 63.4% 5040 88 Stu Scheurwater 80 51 63.7% 5310 89 Todd Tichenor 65 43 66.2% 4777 90 Andy Fletcher 55 39 70.9% 3609 91 CB Bucknor 9 7 77.8% 674
