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 Monday, June 8.
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 28 9 32.1% 1737 3 Dexter Kelley 27 9 33.3% 1832 4 David Rackley 46 17 37.0% 3818 5 Tyler Jones 27 10 37.0% 1973 6 Derek Thomas 40 15 37.5% 2762 7 Erich Bacchus 34 13 38.2% 3649 8 Emil Jimenez 39 15 38.5% 2929 9 Scott Barry 43 18 41.9% 3430 10 John Tumpane 50 21 42.0% 4001 11 Nic Lentz 57 24 42.1% 3955 12 Mark Ripperger 52 22 42.3% 3943 13 James Hoye 49 21 42.9% 3562 13 Alex Tosi 42 18 42.9% 3667 13 John Libka 35 15 42.9% 3475 13 Edwin Jimenez 21 9 42.9% 1848 17 Jonathan Parra 25 11 44.0% 1874 18 James Jean 45 20 44.4% 3555 19 Adam Beck 58 26 44.8% 3883 20 Lance Barksdale 42 19 45.2% 3180 21 Austin Jones 41 19 46.3% 2754 22 Quinn Wolcott 58 27 46.6% 4141 23 Jansen Visconti 45 21 46.7% 3451 25 Ryan Additon 61 29 47.5% 3696 24 Adam Hamari 40 19 47.5% 3502 26 Nate Tomlinson 42 20 47.6% 3840 27 Shane Livensparger 44 21 47.7% 3140 28 Jordan Baker 46 22 47.8% 3682 28 Steven Jaschinski 23 11 47.8% 1398 31 Vic Carapazza 54 26 48.1% 4234 30 Edwin Moscoso 52 25 48.1% 3578 32 Chris Conroy 43 21 48.8% 3396 33 Dan Merzel 45 22 48.9% 3233 33 Brennan Miller 45 22 48.9% 3559 35 Will Little 58 29 50.0% 3846 35 Bruce Dreckman 56 28 50.0% 4005 35 Tom Hanahan 56 28 50.0% 3942 35 Jen Pawol 28 14 50.0% 1731 39 Chris Guccione 67 34 50.7% 3964 40 Mark Wegner 49 25 51.0% 3851 40 Jeremie Rehak 49 25 51.0% 3255 40 Ryan Blakney 49 25 51.0% 3723 40 Ryan Wills 49 25 51.0% 3465 44 Nick Mahrley 35 18 51.4% 2999 45 Carlos Torres 48 25 52.1% 3747 45 Alex MacKay 48 25 52.1% 3380 45 Nestor Ceja 48 25 52.1% 3590 48 Junior Valentine 46 24 52.2% 3221 49 D.J. Reyburn 51 27 52.9% 3419 50 Tripp Gibson 49 26 53.1% 3971 51 Brian O'Nora 41 22 53.7% 2830 52 Alan Porter 48 26 54.2% 3340 53 Mike Muchlinski 46 25 54.3% 3540 54 Bill Miller 51 28 54.9% 3894 55 Cory Blaser 47 26 55.3% 3093 56 Laz Diaz 73 41 56.2% 4255 57 Roberto Ortiz 48 27 56.3% 3085 58 Paul Clemons 39 22 56.4% 3449 59 Dan Bellino 60 34 56.7% 3773 60 Brock Ballou 37 21 56.8% 2598 61 Malachi Moore 51 29 56.9% 3788 62 Charlie Ramos 42 24 57.1% 2286 63 Marvin Hudson 40 23 57.5% 3347 64 Gabe Morales 45 26 57.8% 3052 64 Ben May 45 26 57.8% 3663 66 Sean Barber 57 33 57.9% 3520 67 Chad Fairchild 53 31 58.5% 3563 68 Chad Whitson 46 27 58.7% 3127 69 Alfonso Márquez 39 23 59.0% 3296 70 Adrian Johnson 37 22 59.5% 2285 71 Rob Drake 55 33 60.0% 3710 72 Ramon De Jesus 48 29 60.4% 2677 73 Doug Eddings 46 28 60.9% 3317 74 Dan Iassogna 59 36 61.0% 3888 75 Lance Barrett 67 41 61.2% 4042 76 Jim Wolf 44 27 61.4% 2931 77 Mike Estabrook 52 32 61.5% 3552 78 Willie Traynor 47 29 61.7% 3785 79 Hunter Wendelstedt 66 41 62.1% 3598 79 Manny Gonzalez 66 41 62.1% 3824 81 John Bacon 45 28 62.2% 2203 82 Ron Kulpa 32 20 62.5% 1774 83 Brian Walsh 51 32 62.7% 3097 84 Chris Segal 57 36 63.2% 3588 85 Stu Scheurwater 52 33 63.5% 3286 86 Jacob Metz 33 22 66.7% 1769 87 Todd Tichenor 43 29 67.4% 3334 88 Clint Vondrak 40 27 67.5% 3196 89 Andy Fletcher 40 29 72.5% 2790 90 CB Bucknor 9 7 77.8% 674 91 Felix Neon 15 12 80.0% 578
