May 29, 2026, 12:10 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 Thursday, May 28.
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 Edwin Jimenez 10 3 30.0% 1199 3 Derek Thomas 29 9 31.0% 2222 4 John Tumpane 37 12 32.4% 3200 5 Dexter Kelley 27 9 33.3% 1832 5 Louie Krupa 18 6 33.3% 1139 7 David Rackley 42 15 35.7% 3267 8 Tyler Jones 27 10 37.0% 1973 9 Mark Ripperger 37 14 37.8% 3011 10 Erich Bacchus 28 11 39.3% 3041 11 Emil Jimenez 35 14 40.0% 2533 13 Nic Lentz 53 22 41.5% 3401 12 Adam Beck 41 17 41.5% 3043 14 James Hoye 45 19 42.2% 3270 15 John Libka 33 14 42.4% 3152 16 Scott Barry 37 16 43.2% 2892 17 Alex Tosi 41 18 43.9% 3007 18 Jonathan Parra 25 11 44.0% 1874 19 Jordan Baker 40 18 45.0% 3154 20 Lance Barksdale 42 19 45.2% 3180 21 Will Little 53 24 45.3% 3544 22 Austin Jones 33 15 45.5% 2435 23 Jeremie Rehak 39 18 46.2% 2689 24 Edwin Moscoso 47 22 46.8% 3023 25 Steven Jaschinski 17 8 47.1% 892 25 Jen Pawol 17 8 47.1% 1158 27 Adam Hamari 36 17 47.2% 3195 27 Shane Livensparger 36 17 47.2% 2823 27 James Jean 36 17 47.2% 2979 30 Ryan Additon 55 26 47.3% 3423 31 Chris Conroy 39 19 48.7% 3041 32 Quinn Wolcott 46 23 50.0% 3304 32 Nestor Ceja 42 21 50.0% 3024 32 Mark Wegner 38 19 50.0% 3296 32 Dan Merzel 38 19 50.0% 2647 32 Jansen Visconti 36 18 50.0% 2854 32 Alan Porter 34 17 50.0% 2730 32 Brennan Miller 34 17 50.0% 2932 39 Vic Carapazza 45 23 51.1% 3676 39 Bruce Dreckman 45 23 51.1% 3168 41 Sean Barber 43 22 51.2% 2953 42 D.J. Reyburn 41 21 51.2% 2913 43 Alex MacKay 37 19 51.4% 2729 44 Chris Guccione 50 26 52.0% 2936 45 Tom Hanahan 48 25 52.1% 3326 46 Tripp Gibson 42 22 52.4% 3357 47 Ben May 36 19 52.8% 3094 48 Laz Diaz 58 31 53.4% 3658 49 Mike Muchlinski 43 23 53.5% 3251 50 Brian O'Nora 41 22 53.7% 2830 51 Nick Mahrley 26 14 53.8% 2430 52 Junior Valentine 35 19 54.3% 2619 52 Nate Tomlinson 35 19 54.3% 3183 54 Malachi Moore 46 25 54.3% 3531 55 Ryan Wills 44 24 54.5% 3150 56 Dan Bellino 49 27 55.1% 3193 57 Bill Miller 47 26 55.3% 3563 58 Carlos Torres 41 23 56.1% 3132 59 Gabe Morales 39 22 56.4% 2746 60 Brock Ballou 37 21 56.8% 2598 61 Ryan Blakney 42 24 57.1% 2839 61 Ramon De Jesus 35 20 57.1% 2039 61 Charlie Ramos 42 24 57.1% 2286 64 Chad Fairchild 40 23 57.5% 2932 65 Rob Drake 45 26 57.8% 3127 66 Cory Blaser 38 22 57.9% 2493 67 Marvin Hudson 31 18 58.1% 2769 68 Roberto Ortiz 43 25 58.1% 2797 69 Lance Barrett 53 31 58.5% 3464 70 Dan Iassogna 46 27 58.7% 2924 71 Adrian Johnson 37 22 59.5% 2285 72 Chad Whitson 45 27 60.0% 2844 73 Manny Gonzalez 58 35 60.3% 3269 74 Jim Wolf 33 20 60.6% 2342 75 John Bacon 45 28 62.2% 2203 76 Doug Eddings 43 27 62.8% 2999 77 Mike Estabrook 49 31 63.3% 3261 78 Alfonso Márquez 33 21 63.6% 2937 78 Paul Clemons 33 21 63.6% 2546 80 Stu Scheurwater 37 24 64.9% 2651 80 Willie Traynor 37 24 64.9% 3142 82 Todd Tichenor 40 26 65.0% 3050 83 Ron Kulpa 29 19 65.5% 1473 84 Hunter Wendelstedt 53 35 66.0% 2803 85 Jacob Metz 30 20 66.7% 1503 85 Brian Walsh 42 28 66.7% 2491 87 Clint Vondrak 22 15 68.2% 2477 88 Chris Segal 51 35 68.6% 2964 89 Andy Fletcher 35 27 77.1% 2469 90 CB Bucknor 9 7 77.8% 674 91 Felix Neon 15 12 80.0% 578
