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 1
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 Dexter Kelley 27 9 33.3% 1832 2 Louie Krupa 18 6 33.3% 1139 4 John Tumpane 42 15 35.7% 3420 5 Derek Thomas 36 13 36.1% 2516 6 Tyler Jones 27 10 37.0% 1973 7 Mark Ripperger 40 15 37.5% 3362 7 Edwin Jimenez 16 6 37.5% 1476 9 David Rackley 45 17 37.8% 3531 10 Emil Jimenez 39 15 38.5% 2929 11 Scott Barry 40 16 40.0% 3171 12 Erich Bacchus 32 13 40.6% 3362 13 John Libka 33 14 42.4% 3152 14 Nic Lentz 56 24 42.9% 3653 14 James Hoye 49 21 42.9% 3562 14 Adam Beck 49 21 42.9% 3346 14 Jordan Baker 42 18 42.9% 3432 14 Alex Tosi 42 18 42.9% 3336 19 Jonathan Parra 25 11 44.0% 1874 20 James Jean 40 18 45.0% 3294 20 Steven Jaschinski 20 9 45.0% 1123 22 Lance Barksdale 42 19 45.2% 3180 22 Jansen Visconti 42 19 45.2% 3158 24 Quinn Wolcott 50 23 46.0% 3597 25 Austin Jones 41 19 46.3% 2754 26 Edwin Moscoso 47 22 46.8% 3023 27 Shane Livensparger 36 17 47.2% 2823 28 Brennan Miller 38 18 47.4% 3256 30 Ryan Additon 61 29 47.5% 3696 29 Adam Hamari 40 19 47.5% 3502 31 Chris Conroy 39 19 48.7% 3041 32 Will Little 58 29 50.0% 3846 32 Dan Merzel 42 21 50.0% 2909 32 Mark Wegner 38 19 50.0% 3296 32 Nate Tomlinson 38 19 50.0% 3459 32 Alan Porter 34 17 50.0% 2730 32 Jen Pawol 22 11 50.0% 1469 38 Chris Guccione 53 27 50.9% 3281 39 Bruce Dreckman 51 26 51.0% 3462 40 Vic Carapazza 49 25 51.0% 3935 40 Ryan Wills 49 25 51.0% 3465 42 Jeremie Rehak 45 23 51.1% 2981 43 D.J. Reyburn 41 21 51.2% 2913 44 Alex MacKay 37 19 51.4% 2729 45 Nick Mahrley 31 16 51.6% 2716 46 Tom Hanahan 48 25 52.1% 3326 47 Nestor Ceja 46 24 52.2% 3317 48 Tripp Gibson 42 22 52.4% 3357 49 Laz Diaz 58 31 53.4% 3658 50 Carlos Torres 43 23 53.5% 3430 51 Brian O'Nora 41 22 53.7% 2830 51 Ben May 41 22 53.7% 3374 53 Junior Valentine 35 19 54.3% 2619 54 Mike Muchlinski 46 25 54.3% 3540 55 Marvin Hudson 33 18 54.5% 3047 55 Ryan Blakney 44 24 54.5% 3128 57 Bill Miller 47 26 55.3% 3563 58 Dan Bellino 56 31 55.4% 3535 59 Gabe Morales 39 22 56.4% 2746 60 Sean Barber 53 30 56.6% 3289 61 Brock Ballou 37 21 56.8% 2598 62 Malachi Moore 51 29 56.9% 3788 63 Charlie Ramos 42 24 57.1% 2286 64 Chad Fairchild 40 23 57.5% 2932 64 Ramon De Jesus 40 23 57.5% 2384 66 Dan Iassogna 52 30 57.7% 3233 67 Cory Blaser 38 22 57.9% 2493 68 Rob Drake 50 29 58.0% 3368 69 Roberto Ortiz 43 25 58.1% 2797 70 Alfonso Márquez 39 23 59.0% 3296 71 Adrian Johnson 37 22 59.5% 2285 72 Lance Barrett 57 34 59.6% 3743 73 Chad Whitson 45 27 60.0% 2844 74 Manny Gonzalez 58 35 60.3% 3269 75 Doug Eddings 46 28 60.9% 3317 76 Jim Wolf 41 25 61.0% 2631 76 Willie Traynor 41 25 61.0% 3451 78 Mike Estabrook 52 32 61.5% 3552 79 John Bacon 45 28 62.2% 2203 80 Paul Clemons 33 21 63.6% 2814 81 Brian Walsh 48 31 64.6% 2826 82 Stu Scheurwater 37 24 64.9% 2651 83 Hunter Wendelstedt 60 39 65.0% 3074 84 Ron Kulpa 29 19 65.5% 1473 85 Jacob Metz 30 20 66.7% 1503 85 Clint Vondrak 24 16 66.7% 2755 87 Todd Tichenor 43 29 67.4% 3334 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
