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 Sunday, June 21.
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 Jonathan Parra 32 14 43.8% 2487 15 Nic Lentz 63 28 44.4% 4526 16 John Libka 38 17 44.7% 3782 17 John Tumpane 58 26 44.8% 4299 18 Tyler Jones 40 18 45.0% 2540 19 Chris Conroy 48 22 45.8% 3755 19 Shane Livensparger 48 22 45.8% 3440 21 Jansen Visconti 50 23 46.0% 3727 21 Nate Tomlinson 50 23 46.0% 4436 23 Austin Jones 41 19 46.3% 2754 24 Vic Carapazza 58 27 46.6% 4717 25 Adam Beck 62 29 46.8% 4185 26 Jordan Baker 53 25 47.2% 4264 27 Quinn Wolcott 63 30 47.6% 4392 27 Tom Hanahan 63 30 47.6% 4511 29 Ryan Additon 73 35 47.9% 4520 30 Dan Merzel 56 27 48.2% 3872 31 Will Little 64 31 48.4% 4427 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 37 Nick Mahrley 35 18 51.4% 2999 38 Steven Jaschinski 33 17 51.5% 1989 39 Jeremie Rehak 56 29 51.8% 3599 40 Junior Valentine 52 27 51.9% 3808 41 D.J. Reyburn 55 29 52.7% 3689 41 Ryan Wills 55 29 52.7% 4021 43 Sean Barber 66 35 53.0% 4102 44 Bruce Dreckman 64 34 53.1% 4377 45 Ryan Blakney 56 30 53.6% 4074 45 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 Lance Barksdale 59 32 54.2% 4128 49 Edwin Moscoso 59 32 54.2% 4072 51 Alan Porter 55 30 54.5% 3598 52 Roberto Ortiz 53 29 54.7% 3606 53 Chris Guccione 76 42 55.3% 4565 54 Chad Fairchild 61 34 55.7% 4104 55 Laz Diaz 77 43 55.8% 4785 56 Paul Clemons 50 28 56.0% 4284 57 Bill Miller 64 36 56.3% 4514 57 Cory Blaser 48 27 56.3% 3360 59 Ben May 46 26 56.5% 3965 59 Jen Pawol 46 26 56.5% 2653 61 Malachi Moore 75 43 57.3% 4882 62 Alex MacKay 54 31 57.4% 3740 63 Marvin Hudson 40 23 57.5% 3347 64 Doug Eddings 57 33 57.9% 4268 64 Mike Estabrook 57 33 57.9% 4165 66 Gabe Morales 50 29 58.0% 3556 67 Charlie Ramos 55 32 58.2% 2882 68 Dan Bellino 67 39 58.2% 4304 69 Brock Ballou 41 24 58.5% 2878 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 76 Jim Wolf 48 29 60.4% 3210 77 Alfonso Márquez 51 31 60.8% 3885 78 Hunter Wendelstedt 73 45 61.6% 3878 78 Manny Gonzalez 73 45 61.6% 4362 80 Ron Kulpa 45 28 62.2% 2622 81 Felix Neon 27 17 63.0% 1186 82 Chris Segal 65 41 63.1% 4127 83 John Bacon 49 31 63.3% 2526 84 Dan Iassogna 69 44 63.8% 4182 85 Jacob Metz 47 30 63.8% 2607 86 Clint Vondrak 45 29 64.4% 3685 87 Stu Scheurwater 69 45 65.2% 4147 88 Brian Walsh 59 39 66.1% 3723 89 Todd Tichenor 58 40 69.0% 4178 90 Andy Fletcher 40 29 72.5% 2790 91 CB Bucknor 9 7 77.8% 674
