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 Saturday, June 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 10 3 30.0% 1152 2 Dexter Kelley 36 12 33.3% 2451 2 Louie Krupa 33 11 33.3% 2028 4 Derek Thomas 45 16 35.6% 2982 5 David Rackley 57 23 40.4% 4691 6 Scott Barry 47 19 40.4% 4009 7 Emil Jimenez 49 20 40.8% 3823 8 Erich Bacchus 46 19 41.3% 4280 9 Mark Ripperger 58 24 41.4% 4246 10 James Hoye 53 22 41.5% 4260 10 James Jean 53 22 41.5% 4439 12 Alex Tosi 48 20 41.7% 4169 12 Edwin Jimenez 24 10 41.7% 2181 14 Jonathan Parra 32 14 43.8% 2487 15 Nic Lentz 61 27 44.3% 4230 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 Quinn Wolcott 63 30 47.6% 4392 26 Tom Hanahan 63 30 47.6% 4511 28 Ryan Additon 73 35 47.9% 4520 29 Dan Merzel 56 27 48.2% 3872 30 Will Little 64 31 48.4% 4427 32 Carlos Torres 51 25 49.0% 4069 31 Jordan Baker 49 24 49.0% 3992 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 Edwin Moscoso 55 28 50.9% 3846 38 Nick Mahrley 35 18 51.4% 2999 39 Steven Jaschinski 33 17 51.5% 1989 40 Jeremie Rehak 56 29 51.8% 3599 41 Junior Valentine 52 27 51.9% 3808 41 Ryan Wills 52 27 51.9% 3743 43 D.J. Reyburn 55 29 52.7% 3689 44 Mike Muchlinski 51 27 52.9% 4114 45 Bruce Dreckman 64 34 53.1% 4377 46 Ryan Blakney 56 30 53.6% 4074 46 Brennan Miller 56 30 53.6% 4228 48 Brian O'Nora 41 22 53.7% 2830 49 Lance Barksdale 59 32 54.2% 4128 50 Alan Porter 55 30 54.5% 3598 51 Roberto Ortiz 53 29 54.7% 3606 52 Chris Guccione 76 42 55.3% 4565 53 Chad Fairchild 61 34 55.7% 4104 54 Laz Diaz 77 43 55.8% 4785 55 Paul Clemons 50 28 56.0% 4284 56 Bill Miller 64 36 56.3% 4514 56 Cory Blaser 48 27 56.3% 3360 58 Sean Barber 62 35 56.5% 3790 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 Adrian Johnson 41 24 58.5% 2550 69 Brock Ballou 41 24 58.5% 2878 71 Rob Drake 64 38 59.4% 4526 72 Ramon De Jesus 57 34 59.6% 3229 73 Lance Barrett 77 46 59.7% 4653 74 Chad Whitson 55 33 60.0% 3990 75 Jim Wolf 48 29 60.4% 3210 76 Alfonso Márquez 51 31 60.8% 3885 76 Willie Traynor 51 31 60.8% 4436 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 52 36 69.2% 3887 90 Andy Fletcher 40 29 72.5% 2790 91 CB Bucknor 9 7 77.8% 674
