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 Tuesday, June 23.
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 13 4 30.8% 1453 2 Derek Thomas 48 16 33.3% 3311 2 Dexter Kelley 36 12 33.3% 2451 2 Louie Krupa 33 11 33.3% 2028 5 David Rackley 57 23 40.4% 4691 6 Scott Barry 47 19 40.4% 4299 7 Emil Jimenez 49 20 40.8% 3823 8 Erich Bacchus 46 19 41.3% 4280 9 James Hoye 53 22 41.5% 4260 9 James Jean 53 22 41.5% 4439 11 Alex Tosi 48 20 41.7% 4169 11 Edwin Jimenez 24 10 41.7% 2181 13 Mark Ripperger 64 27 42.2% 4541 14 John Libka 42 18 42.9% 4057 15 Jonathan Parra 32 14 43.8% 2487 16 Nic Lentz 63 28 44.4% 4526 17 John Tumpane 58 26 44.8% 4299 18 Jansen Visconti 55 25 45.5% 4012 19 Chris Conroy 52 24 46.2% 3995 19 Shane Livensparger 52 24 46.2% 3721 19 Nate Tomlinson 52 24 46.2% 4690 22 Austin Jones 41 19 46.3% 2754 23 Will Little 69 32 46.4% 4760 24 Vic Carapazza 58 27 46.6% 4717 25 Adam Beck 62 29 46.8% 4185 26 Quinn Wolcott 66 31 47.0% 4671 27 Jordan Baker 53 25 47.2% 4264 28 Dan Merzel 59 28 47.5% 4216 29 Tom Hanahan 63 30 47.6% 4511 30 Ryan Additon 73 35 47.9% 4520 31 Tyler Jones 47 23 48.9% 2816 32 Carlos Torres 51 25 49.0% 4289 33 Nestor Ceja 61 30 49.2% 4504 34 Mark Wegner 62 31 50.0% 4802 34 Tripp Gibson 54 27 50.0% 4546 34 Adam Hamari 48 24 50.0% 4300 34 Nick Mahrley 42 21 50.0% 3334 38 D.J. Reyburn 59 30 50.8% 3947 39 Steven Jaschinski 33 17 51.5% 1989 40 Jeremie Rehak 61 32 52.5% 3856 41 Ryan Blakney 59 31 52.5% 4310 42 Ryan Wills 55 29 52.7% 4021 43 Sean Barber 66 35 53.0% 4102 44 Bruce Dreckman 64 34 53.1% 4377 45 Junior Valentine 58 31 53.4% 4164 46 Brennan Miller 56 30 53.6% 4228 47 Brian O'Nora 41 22 53.7% 2830 48 Mike Muchlinski 52 28 53.8% 4366 49 Edwin Moscoso 59 32 54.2% 4072 50 Alan Porter 55 30 54.5% 3598 51 Roberto Ortiz 53 29 54.7% 3606 52 Cory Blaser 51 28 54.9% 3656 52 Ben May 51 28 54.9% 4224 54 Chris Guccione 76 42 55.3% 4565 55 Chad Fairchild 61 34 55.7% 4104 56 Laz Diaz 77 43 55.8% 4785 57 Paul Clemons 50 28 56.0% 4284 58 Jen Pawol 46 26 56.5% 2653 59 Bill Miller 72 41 56.9% 4830 60 Malachi Moore 75 43 57.3% 4882 61 Doug Eddings 61 35 57.4% 4563 62 Gabe Morales 54 31 57.4% 3814 63 Marvin Hudson 40 23 57.5% 3347 64 Mike Estabrook 57 33 57.9% 4165 65 Charlie Ramos 55 32 58.2% 2882 66 Dan Bellino 67 39 58.2% 4304 67 Brock Ballou 41 24 58.5% 2878 68 Alex MacKay 58 34 58.6% 4029 69 Lance Barksdale 68 40 58.8% 4417 70 Rob Drake 64 38 59.4% 4526 71 Willie Traynor 52 31 59.6% 4705 72 Ramon De Jesus 57 34 59.6% 3229 73 Lance Barrett 77 46 59.7% 4653 74 Adrian Johnson 45 27 60.0% 2788 74 Chad Whitson 55 33 60.0% 3990 74 Clint Vondrak 50 30 60.0% 3966 77 Alfonso Márquez 51 31 60.8% 3885 77 Jacob Metz 51 31 60.8% 2914 79 Jim Wolf 54 33 61.1% 3479 80 Manny Gonzalez 73 45 61.6% 4362 81 Hunter Wendelstedt 79 49 62.0% 4158 82 Ron Kulpa 45 28 62.2% 2622 83 Felix Neon 27 17 63.0% 1186 84 Chris Segal 65 41 63.1% 4127 85 John Bacon 49 31 63.3% 2526 86 Dan Iassogna 75 48 64.0% 4499 87 Brian Walsh 64 41 64.1% 4110 88 Stu Scheurwater 69 45 65.2% 4147 89 Todd Tichenor 58 40 69.0% 4178 90 Andy Fletcher 40 29 72.5% 2790 91 CB Bucknor 9 7 77.8% 674
