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 Thursday, May 14.
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 1 0 0.0% 280 2 Louie Krupa 4 1 25.0% 264 3 Derek Thomas 23 6 26.1% 1718 4 John Tumpane 27 8 29.6% 2285 5 Emil Jimenez 20 6 30.0% 1574 5 Edwin Jimenez 10 3 30.0% 1199 7 David Rackley 30 10 33.3% 2382 8 Dexter Kelley 24 9 37.5% 1560 9 Will Little 39 15 38.5% 2633 10 Erich Bacchus 23 9 39.1% 2469 11 Lance Barksdale 37 15 40.5% 2637 12 Mark Ripperger 34 14 41.2% 2743 13 Nic Lentz 46 19 41.3% 2876 14 Brennan Miller 21 9 42.9% 2060 15 Adam Beck 30 13 43.3% 2408 16 Ryan Additon 39 17 43.6% 2478 17 Tyler Jones 16 7 43.8% 1109 18 Jonathan Parra 9 4 44.4% 661 19 James Hoye 29 13 44.8% 2399 19 Jeremie Rehak 29 13 44.8% 2086 19 Austin Jones 29 13 44.8% 1855 22 Edwin Moscoso 40 18 45.0% 2700 23 Shane Livensparger 31 14 45.2% 2272 23 Alex Tosi 31 14 45.2% 2155 25 Jansen Visconti 28 13 46.4% 2291 25 John Libka 28 13 46.4% 2542 25 Jordan Baker 28 13 46.4% 2256 28 Alan Porter 30 14 46.7% 2200 29 Brian O'Nora 36 17 47.2% 2540 30 Nate Tomlinson 25 12 48.0% 2388 31 Dan Merzel 29 14 48.3% 2056 32 Vic Carapazza 37 18 48.6% 3055 33 Quinn Wolcott 39 19 48.7% 2780 34 Malachi Moore 38 19 50.0% 2968 34 Chris Conroy 30 15 50.0% 2418 34 Gabe Morales 30 15 50.0% 2233 34 Alex MacKay 30 15 50.0% 2150 34 Adam Hamari 24 12 50.0% 2327 34 Ben May 24 12 50.0% 2153 34 Steven Jaschinski 12 6 50.0% 585 41 Scott Barry 29 15 51.7% 2265 42 Manny Gonzalez 46 24 52.2% 2713 43 Tripp Gibson 30 16 53.3% 2434 44 Bruce Dreckman 43 23 53.5% 2641 45 Ramon De Jesus 26 14 53.8% 1469 46 Sean Barber 35 19 54.3% 2382 47 D.J. Reyburn 33 18 54.5% 2077 47 James Jean 22 12 54.5% 2025 49 Dan Bellino 40 22 55.0% 2565 49 Brock Ballou 20 11 55.0% 1715 51 Nestor Ceja 29 16 55.2% 2185 52 Mark Wegner 27 15 55.6% 2468 52 Jen Pawol 9 5 55.6% 601 54 Adrian Johnson 34 19 55.9% 2028 54 Ryan Blakney 34 19 55.9% 2292 56 Carlos Torres 32 18 56.3% 2547 57 Chris Guccione 37 21 56.8% 2329 57 Ryan Wills 37 21 56.8% 2326 59 Cory Blaser 28 16 57.1% 1973 59 Stu Scheurwater 28 16 57.1% 2113 59 Rob Drake 35 20 57.1% 2293 59 Dan Iassogna 42 24 57.1% 2662 59 Charlie Ramos 42 24 57.1% 2286 64 Tom Hanahan 40 23 57.5% 2680 65 Junior Valentine 26 15 57.7% 2106 66 Nick Mahrley 19 11 57.9% 1475 67 Roberto Ortiz 43 25 58.1% 2797 68 Bill Miller 36 21 58.3% 2719 68 Lance Barrett 48 28 58.3% 2913 70 Laz Diaz 41 24 58.5% 2482 71 Chad Fairchild 29 17 58.6% 2313 72 Chad Whitson 37 22 59.5% 2320 73 Mike Muchlinski 35 21 60.0% 2675 74 Marvin Hudson 26 16 61.5% 2209 75 Jim Wolf 24 15 62.5% 1764 75 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 35 25 71.4% 1959 87 Chris Segal 36 26 72.2% 2338 88 Andy Fletcher 35 27 77.1% 2469 89 CB Bucknor 9 7 77.8% 674 90 Ron Kulpa 14 11 78.6% 683 91 Felix Neon 15 12 80.0% 578
