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, May 16.
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 Louie Krupa 4 1 25.0% 264 3 Derek Thomas 23 6 26.1% 1718 3 Emil Jimenez 23 6 26.1% 1947 5 John Tumpane 29 8 27.6% 2557 6 Edwin Jimenez 10 3 30.0% 1199 7 David Rackley 30 10 33.3% 2382 8 Dexter Kelley 24 9 37.5% 1560 9 Erich Bacchus 23 9 39.1% 2469 10 Tyler Jones 20 8 40.0% 1405 11 Lance Barksdale 37 15 40.5% 2637 12 Nic Lentz 51 21 41.2% 3098 12 Mark Ripperger 34 14 41.2% 2743 12 Adam Beck 34 14 41.2% 2720 15 Will Little 45 19 42.2% 2947 16 Brennan Miller 21 9 42.9% 2060 17 Shane Livensparger 34 15 44.1% 2539 18 James Hoye 36 16 44.4% 2725 19 Jeremie Rehak 29 13 44.8% 2086 19 Austin Jones 29 13 44.8% 1855 21 Edwin Moscoso 40 18 45.0% 2700 22 Ryan Additon 41 19 46.3% 2712 23 Jansen Visconti 28 13 46.4% 2291 23 John Libka 28 13 46.4% 2542 23 Jordan Baker 28 13 46.4% 2256 26 Alan Porter 30 14 46.7% 2200 27 Scott Barry 32 15 46.9% 2610 28 Alex Tosi 34 16 47.1% 2421 29 Nate Tomlinson 25 12 48.0% 2388 30 James Jean 27 13 48.1% 2343 31 Quinn Wolcott 39 19 48.7% 3022 32 Malachi Moore 38 19 50.0% 2968 32 Gabe Morales 30 15 50.0% 2233 32 Alex MacKay 30 15 50.0% 2150 32 Adam Hamari 24 12 50.0% 2327 32 Ben May 24 12 50.0% 2153 32 Steven Jaschinski 12 6 50.0% 585 38 Vic Carapazza 41 21 51.2% 3350 39 Dan Merzel 33 17 51.5% 2322 40 Manny Gonzalez 46 24 52.2% 2713 41 Chris Conroy 36 19 52.8% 2726 42 Tripp Gibson 30 16 53.3% 2434 43 Bruce Dreckman 43 23 53.5% 2641 44 Brian O'Nora 41 22 53.7% 2829 45 Bill Miller 39 21 53.8% 2990 45 Ramon De Jesus 26 14 53.8% 1469 45 Jonathan Parra 13 7 53.8% 989 48 Sean Barber 35 19 54.3% 2382 49 D.J. Reyburn 33 18 54.5% 2077 50 Brock Ballou 31 17 54.8% 2039 51 Dan Bellino 40 22 55.0% 2565 52 Nestor Ceja 29 16 55.2% 2185 53 Mark Wegner 27 15 55.6% 2468 53 Jen Pawol 9 5 55.6% 601 55 Adrian Johnson 34 19 55.9% 2028 56 Cory Blaser 32 18 56.3% 2248 56 Carlos Torres 32 18 56.3% 2547 58 Rob Drake 39 22 56.4% 2563 59 Laz Diaz 46 26 56.5% 2837 60 Chris Guccione 37 21 56.8% 2329 60 Mike Muchlinski 37 21 56.8% 2966 60 Ryan Blakney 37 21 56.8% 2555 60 Ryan Wills 37 21 56.8% 2326 64 Jim Wolf 28 16 57.1% 2046 64 Dan Iassogna 42 24 57.1% 2662 64 Charlie Ramos 42 24 57.1% 2286 67 Tom Hanahan 40 23 57.5% 2680 68 Junior Valentine 26 15 57.7% 2106 69 Nick Mahrley 19 11 57.9% 1475 70 Stu Scheurwater 31 18 58.1% 2372 71 Roberto Ortiz 43 25 58.1% 2797 72 Lance Barrett 48 28 58.3% 2913 73 Chad Fairchild 29 17 58.6% 2313 74 Chad Whitson 37 22 59.5% 2320 75 Marvin Hudson 26 16 61.5% 2209 76 Todd Tichenor 24 15 62.5% 2164 77 Alfonso Márquez 27 17 63.0% 2318 78 Mike Estabrook 36 23 63.9% 2657 79 Paul Clemons 28 18 64.3% 2268 80 Clint Vondrak 17 11 64.7% 1956 81 Doug Eddings 37 24 64.9% 2490 82 Jacob Metz 30 20 66.7% 1503 83 Hunter Wendelstedt 49 33 67.3% 2529 84 John Bacon 40 27 67.5% 1662 85 Willie Traynor 31 21 67.7% 2518 86 Brian Walsh 38 26 68.4% 2251 87 Chris Segal 36 26 72.2% 2338 88 Ron Kulpa 21 16 76.2% 924 89 Andy Fletcher 35 27 77.1% 2469 90 CB Bucknor 9 7 77.8% 674 91 Felix Neon 15 12 80.0% 578
