Jul 19, 2026, 10:37 PM 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 Sunday, July 19.
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 16 6 37.5% 1760 3 Derek Thomas 60 23 38.3% 3949 4 Edwin Jimenez 28 11 39.3% 2458 5 Dexter Kelley 48 19 39.6% 3204 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 John Libka 52 22 42.3% 4977 10 Mark Ripperger 84 36 42.9% 6029 10 Will Little 77 33 42.9% 5590 12 Scott Barry 60 26 43.3% 4911 13 James Jean 62 27 43.5% 4996 14 Jonathan Parra 32 14 43.8% 2487 15 David Rackley 72 32 44.4% 5623 16 Austin Jones 56 25 44.6% 4151 17 Shane Livensparger 64 29 45.3% 4623 18 Jansen Visconti 68 31 45.6% 4894 19 Adam Beck 91 42 46.2% 6010 22 Quinn Wolcott 79 37 46.8% 5853 20 James Hoye 77 36 46.8% 5504 21 Chris Conroy 62 29 46.8% 4917 23 Alex Tosi 72 34 47.2% 5342 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 Ryan Wills 84 42 50.0% 5525 29 D.J. Reyburn 70 35 50.0% 4532 29 Tripp Gibson 64 32 50.0% 5445 29 Nick Mahrley 58 29 50.0% 4843 29 Tyler Jones 58 29 50.0% 3754 29 Steven Jaschinski 44 22 50.0% 2814 35 Nestor Ceja 81 41 50.6% 5763 36 Jeremie Rehak 75 38 50.7% 5060 37 Nate Tomlinson 67 34 50.7% 5630 38 Carlos Torres 59 30 50.8% 4825 39 Tom Hanahan 78 40 51.3% 5575 40 Ryan Blakney 73 38 52.1% 5121 41 John Tumpane 76 40 52.6% 5165 42 Brennan Miller 66 35 53.0% 5330 43 Gabe Morales 64 34 53.1% 4564 44 Jordan Baker 79 42 53.2% 5466 44 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 48 Charlie Ramos 74 40 54.1% 4079 50 Ben May 57 31 54.4% 5133 51 Alan Porter 77 42 54.5% 5130 52 Chris Guccione 87 48 55.2% 5324 52 Brock Ballou 58 32 55.2% 3739 54 Mike Muchlinski 68 38 55.9% 5292 55 Clint Vondrak 59 33 55.9% 4796 56 Doug Eddings 73 41 56.2% 5362 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 Alfonso Márquez 75 43 57.3% 5435 62 Paul Clemons 68 39 57.4% 5480 63 Lance Barrett 101 58 57.4% 5933 64 Bruce Dreckman 87 50 57.5% 5590 65 Marvin Hudson 52 30 57.7% 4153 66 Mike Estabrook 76 44 57.9% 5267 67 Chad Whitson 69 40 58.0% 4865 68 Laz Diaz 91 53 58.2% 5559 69 Bill Miller 84 49 58.3% 5699 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 Roberto Ortiz 76 45 59.2% 4996 73 Rob Drake 76 45 59.2% 5723 75 Jacob Metz 57 34 59.6% 3214 76 Dan Bellino 82 49 59.8% 5516 77 Manny Gonzalez 83 50 60.2% 5181 78 Ron Kulpa 58 35 60.3% 3585 79 Alex MacKay 84 51 60.7% 5541 80 Willie Traynor 69 42 60.9% 6074 81 Brian Walsh 78 48 61.5% 4920 82 Adrian Johnson 58 36 62.1% 3675 83 Lance Barksdale 88 55 62.5% 5510 84 Chris Segal 87 55 63.2% 5336 85 Dan Iassogna 98 62 63.3% 5934 85 John Bacon 49 31 63.3% 2526 87 Stu Scheurwater 80 51 63.7% 5310 88 Felix Neon 35 23 65.7% 1541 89 Todd Tichenor 65 43 66.2% 4777 90 Andy Fletcher 55 39 70.9% 3609 91 CB Bucknor 9 7 77.8% 674
