Jun 28, 2026, 01:00 AM ET 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 27.
Batter ABS Challenge Leaders Catcher ABS Challenge Leaders MLB Team ABS Challenge Rankings Umpire ABS Challenge Leaders Rank UmpireName Chal ChalW Chal% P 1 Derek Thomas 48 16 33.3% 3311 1 Louie Krupa 36 12 33.3% 2334 1 Dexter Kelley 36 12 33.3% 2451 4 Dillon Wilson 16 6 37.5% 1760 5 David Rackley 57 23 40.4% 4691 6 Emil Jimenez 52 21 40.4% 4105 7 Scott Barry 47 19 40.4% 4299 8 Erich Bacchus 46 19 41.3% 4280 9 Edwin Jimenez 24 10 41.7% 2181 10 James Jean 55 23 41.8% 4685 11 Mark Ripperger 69 29 42.0% 4844 12 John Libka 45 19 42.2% 4322 13 Nic Lentz 65 28 43.1% 4836 14 Jonathan Parra 32 14 43.8% 2487 15 Shane Livensparger 57 25 43.9% 4023 16 Will Little 72 32 44.4% 5041 16 Alex Tosi 54 24 44.4% 4455 18 Adam Beck 67 30 44.8% 4504 19 Jansen Visconti 55 25 45.5% 4012 20 Quinn Wolcott 68 31 45.6% 5012 21 James Hoye 59 27 45.8% 4610 21 Jordan Baker 59 27 45.8% 4596 23 Austin Jones 48 22 45.8% 3329 24 Chris Conroy 52 24 46.2% 4237 24 Nate Tomlinson 52 24 46.2% 4690 26 John Tumpane 60 28 46.7% 4595 27 Dan Merzel 59 28 47.5% 4216 28 Tom Hanahan 63 30 47.6% 4511 29 Tripp Gibson 58 28 48.3% 4904 30 Ryan Additon 80 39 48.8% 4810 31 Adam Hamari 51 25 49.0% 4668 32 Nestor Ceja 61 30 49.2% 4504 33 Mark Wegner 67 33 49.3% 5085 34 Vic Carapazza 62 31 50.0% 5000 34 Tyler Jones 50 25 50.0% 3066 36 Sean Barber 69 35 50.7% 4420 37 Edwin Moscoso 63 32 50.8% 4334 38 D.J. Reyburn 59 30 50.8% 3947 39 Carlos Torres 55 28 50.9% 4549 40 Steven Jaschinski 33 17 51.5% 1989 41 Ryan Wills 60 31 51.7% 4286 42 Brennan Miller 61 32 52.5% 4504 43 Ryan Blakney 59 31 52.5% 4310 44 Alan Porter 57 30 52.6% 3868 45 Jeremie Rehak 66 35 53.0% 4173 45 Bruce Dreckman 66 35 53.0% 4680 47 Nick Mahrley 45 24 53.3% 3619 48 Brian O'Nora 41 22 53.7% 2830 49 Chad Fairchild 63 34 54.0% 4347 49 Junior Valentine 63 34 54.0% 4442 51 Ben May 51 28 54.9% 4224 52 Chris Guccione 76 42 55.3% 4565 53 Laz Diaz 77 43 55.8% 4785 54 Mike Muchlinski 59 33 55.9% 4655 55 Roberto Ortiz 57 32 56.1% 3889 56 Jen Pawol 46 26 56.5% 2653 57 Bill Miller 74 42 56.8% 5078 58 Cory Blaser 58 33 56.9% 4007 58 Gabe Morales 58 33 56.9% 4057 60 Malachi Moore 75 43 57.3% 4882 61 Marvin Hudson 40 23 57.5% 3347 62 Jim Wolf 59 34 57.6% 3793 63 Mike Estabrook 57 33 57.9% 4165 64 Paul Clemons 55 32 58.2% 4614 64 Charlie Ramos 55 32 58.2% 2882 66 Dan Bellino 67 39 58.2% 4578 67 Chad Whitson 60 35 58.3% 4281 68 Clint Vondrak 53 31 58.5% 4211 69 Brock Ballou 41 24 58.5% 2878 70 Doug Eddings 68 40 58.8% 4855 71 Adrian Johnson 49 29 59.2% 3054 72 Rob Drake 64 38 59.4% 4526 73 Willie Traynor 52 31 59.6% 4705 74 Lance Barrett 77 46 59.7% 4653 75 Lance Barksdale 73 44 60.3% 4700 76 Alfonso Márquez 51 31 60.8% 3885 76 Jacob Metz 51 31 60.8% 2914 78 Hunter Wendelstedt 82 50 61.0% 4455 79 Alex MacKay 65 40 61.5% 4365 80 Manny Gonzalez 73 45 61.6% 4362 81 Ramon De Jesus 63 39 61.9% 3497 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 80 51 63.7% 4808 87 Brian Walsh 64 41 64.1% 4110 88 Stu Scheurwater 71 46 64.8% 4478 89 Todd Tichenor 61 41 67.2% 4470 90 Andy Fletcher 40 29 72.5% 2790 91 CB Bucknor 9 7 77.8% 674
