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, May 22.
Batter ABS Challenge Leaders Catcher ABS Challenge Leaders MLB Team ABS Challenge Rankings Umpire ABS Challenge Leaders Rank UmpireName Chal ChalW Chal% P 1 Dillon Wilson 3 0 0.0% 551 2 Louie Krupa 7 1 14.3% 585 3 Emil Jimenez 26 7 26.9% 2222 4 John Tumpane 32 9 28.1% 2859 5 Edwin Jimenez 10 3 30.0% 1199 6 Derek Thomas 26 8 30.8% 1975 7 Dexter Kelley 27 9 33.3% 1832 8 David Rackley 38 14 36.8% 2984 9 Erich Bacchus 25 10 40.0% 2779 9 Tyler Jones 20 8 40.0% 1405 11 John Libka 32 13 40.6% 2879 12 Nic Lentz 51 21 41.2% 3098 12 Mark Ripperger 34 14 41.2% 2743 12 Adam Beck 34 14 41.2% 2720 15 James Hoye 40 17 42.5% 2996 15 Lance Barksdale 40 17 42.5% 2891 17 Scott Barry 37 16 43.2% 2892 18 Jordan Baker 32 14 43.8% 2598 18 Austin Jones 32 14 43.8% 2150 20 Shane Livensparger 34 15 44.1% 2539 21 Brennan Miller 29 13 44.8% 2663 22 Edwin Moscoso 40 18 45.0% 2700 23 Jansen Visconti 31 14 45.2% 2575 24 Alex Tosi 37 17 45.9% 2697 25 Will Little 51 24 47.1% 3228 25 Jeremie Rehak 34 16 47.1% 2417 25 Steven Jaschinski 17 8 47.1% 892 28 Jonathan Parra 19 9 47.4% 1329 29 Alan Porter 31 15 48.4% 2463 29 James Jean 31 15 48.4% 2639 31 D.J. Reyburn 37 18 48.6% 2384 32 Quinn Wolcott 39 19 48.7% 3022 33 Ryan Additon 47 23 48.9% 3018 34 Nestor Ceja 38 19 50.0% 2738 34 Tripp Gibson 34 17 50.0% 2728 34 Adam Hamari 32 16 50.0% 2911 34 Ben May 28 14 50.0% 2478 38 Bruce Dreckman 45 23 51.1% 2933 39 Vic Carapazza 41 21 51.2% 3350 40 Alex MacKay 37 19 51.4% 2729 41 Dan Merzel 33 17 51.5% 2322 42 Tom Hanahan 48 25 52.1% 3326 43 Chris Guccione 42 22 52.4% 2624 44 Chris Conroy 36 19 52.8% 2726 45 Mark Wegner 30 16 53.3% 2740 46 Mike Muchlinski 43 23 53.5% 3251 47 Brian O'Nora 41 22 53.7% 2830 48 Sean Barber 39 21 53.8% 2652 49 Nick Mahrley 24 13 54.2% 2098 50 Gabe Morales 35 19 54.3% 2490 50 Junior Valentine 35 19 54.3% 2619 52 Dan Bellino 46 25 54.3% 2850 53 Ryan Wills 42 23 54.8% 2901 54 Nate Tomlinson 31 17 54.8% 2926 55 Jen Pawol 9 5 55.6% 601 56 Malachi Moore 43 24 55.8% 3229 57 Adrian Johnson 34 19 55.9% 2028 57 Brock Ballou 34 19 55.9% 2315 59 Laz Diaz 50 28 56.0% 3092 60 Ramon De Jesus 30 17 56.7% 1768 61 Carlos Torres 37 21 56.8% 2841 62 Bill Miller 44 25 56.8% 3260 63 Ryan Blakney 42 24 57.1% 2839 63 Dan Iassogna 42 24 57.1% 2662 63 Charlie Ramos 42 24 57.1% 2286 66 Chad Fairchild 40 23 57.5% 2932 67 Cory Blaser 38 22 57.9% 2493 68 Lance Barrett 50 29 58.0% 3176 69 Roberto Ortiz 43 25 58.1% 2797 69 Rob Drake 43 25 58.1% 2846 71 Todd Tichenor 29 17 58.6% 2583 71 Marvin Hudson 29 17 58.6% 2492 73 Manny Gonzalez 58 35 60.3% 3269 74 Chad Whitson 38 23 60.5% 2587 75 Jim Wolf 33 20 60.6% 2342 76 Mike Estabrook 41 25 61.0% 2954 77 Doug Eddings 40 25 62.5% 2765 78 Paul Clemons 28 18 64.3% 2268 79 Alfonso Márquez 31 20 64.5% 2633 80 Stu Scheurwater 37 24 64.9% 2651 81 Hunter Wendelstedt 53 35 66.0% 2803 82 John Bacon 42 28 66.7% 1912 82 Jacob Metz 30 20 66.7% 1503 82 Clint Vondrak 21 14 66.7% 2231 82 Brian Walsh 42 28 66.7% 2491 86 Willie Traynor 31 21 67.7% 2518 87 Ron Kulpa 25 17 68.0% 1207 88 Chris Segal 51 35 68.6% 2964 89 Andy Fletcher 35 27 77.1% 2469 90 CB Bucknor 9 7 77.8% 674 91 Felix Neon 15 12 80.0% 578
