May 21, 2026, 12:55 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 Wednesday, May 20.
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 23 6 26.1% 1947 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 34 13 38.2% 2670 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 Lance Barksdale 40 17 42.5% 2891 16 Scott Barry 37 16 43.2% 2892 17 Jordan Baker 32 14 43.8% 2598 18 Shane Livensparger 34 15 44.1% 2539 19 James Hoye 36 16 44.4% 2725 20 Austin Jones 29 13 44.8% 1855 21 Edwin Moscoso 40 18 45.0% 2700 22 Jansen Visconti 31 14 45.2% 2575 23 Alex Tosi 37 17 45.9% 2697 24 Brennan Miller 26 12 46.2% 2386 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 Malachi Moore 38 19 50.0% 2968 34 Tripp Gibson 34 17 50.0% 2728 34 Ben May 28 14 50.0% 2478 37 Bruce Dreckman 45 23 51.1% 2933 38 Vic Carapazza 41 21 51.2% 3350 39 Dan Merzel 33 17 51.5% 2322 40 Adam Hamari 31 16 51.6% 2610 41 Chris Guccione 42 22 52.4% 2624 42 Chris Conroy 36 19 52.8% 2726 43 Nestor Ceja 32 17 53.1% 2434 44 Mark Wegner 30 16 53.3% 2740 44 Nate Tomlinson 30 16 53.3% 2648 46 Mike Muchlinski 43 23 53.5% 3251 47 Brian O'Nora 41 22 53.7% 2830 48 Gabe Morales 35 19 54.3% 2490 48 Sean Barber 35 19 54.3% 2382 50 Dan Bellino 46 25 54.3% 2850 51 Alex MacKay 33 18 54.5% 2426 52 Jen Pawol 9 5 55.6% 601 53 Chad Fairchild 34 19 55.9% 2620 53 Adrian Johnson 34 19 55.9% 2028 53 Brock Ballou 34 19 55.9% 2315 56 Laz Diaz 50 28 56.0% 3092 57 Cory Blaser 32 18 56.3% 2248 57 Carlos Torres 32 18 56.3% 2547 59 Ramon De Jesus 30 17 56.7% 1768 60 Bill Miller 44 25 56.8% 3260 60 Tom Hanahan 44 25 56.8% 2975 62 Manny Gonzalez 51 29 56.9% 2968 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 Lance Barrett 50 29 58.0% 3176 67 Roberto Ortiz 43 25 58.1% 2797 67 Rob Drake 43 25 58.1% 2846 69 Todd Tichenor 29 17 58.6% 2583 69 Marvin Hudson 29 17 58.6% 2492 71 Ryan Wills 39 23 59.0% 2588 72 Nick Mahrley 22 13 59.1% 1790 73 Junior Valentine 32 19 59.4% 2402 74 Chad Whitson 38 23 60.5% 2587 75 Jim Wolf 33 20 60.6% 2342 76 Doug Eddings 40 25 62.5% 2765 77 Mike Estabrook 36 23 63.9% 2657 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 48 35 72.9% 2702 89 Andy Fletcher 35 27 77.1% 2469 90 CB Bucknor 9 7 77.8% 674 91 Felix Neon 15 12 80.0% 578
