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 Monday, August 3.
Batter ABS Challenge Leaders Catcher ABS Challenge Leaders MLB Team ABS Challenge Rankings Umpire ABS Challenge Leaders Rank Name Challenged Overturned Overturn% P 1 Dillon Wilson 22 7 31.8% 2281 2 Derek Thomas 69 26 37.7% 4776 3 Dexter Kelley 64 25 39.1% 4101 4 Edwin Jimenez 28 11 39.3% 2458 5 Mark Ripperger 92 37 40.2% 6626 6 Louie Krupa 42 17 40.5% 2662 7 John Libka 62 26 41.9% 5546 7 Erich Bacchus 62 26 41.9% 5950 9 Jansen Visconti 73 31 42.5% 5485 10 James Jean 62 27 43.5% 4996 11 David Rackley 78 34 43.6% 6249 12 Nic Lentz 95 42 44.2% 6655 13 Austin Jones 56 25 44.6% 4151 14 Ryan Additon 105 47 44.8% 6500 15 Steven Jaschinski 48 22 45.8% 3062 16 Alex Tosi 76 35 46.1% 5624 17 Jonathan Parra 41 19 46.3% 3101 18 Will Little 92 43 46.7% 6405 19 Adam Beck 94 44 46.8% 6309 20 Emil Jimenez 79 37 46.8% 5827 21 Chris Conroy 78 37 47.4% 6042 22 Mark Wegner 88 42 47.7% 6282 23 Edwin Moscoso 94 45 47.9% 6328 24 Scott Barry 71 34 47.9% 5481 24 Adam Hamari 71 34 47.9% 6529 26 Quinn Wolcott 91 44 48.4% 6445 27 Shane Livensparger 78 38 48.7% 5450 28 D.J. Reyburn 80 39 48.8% 5133 29 Vic Carapazza 89 44 49.4% 7137 30 Nestor Ceja 101 50 49.5% 6935 31 James Hoye 88 44 50.0% 5838 31 Tripp Gibson 82 41 50.0% 6552 31 Nate Tomlinson 70 35 50.0% 5872 31 Nick Mahrley 68 34 50.0% 5744 35 Ryan Wills 101 51 50.5% 6487 36 Alan Porter 87 44 50.6% 5757 37 Jeremie Rehak 85 43 50.6% 5756 38 Carlos Torres 64 33 51.6% 5404 39 Dan Merzel 87 45 51.7% 5982 40 Tom Hanahan 81 42 51.9% 5836 41 Ryan Blakney 73 38 52.1% 5121 42 Gabe Morales 72 38 52.8% 5529 43 Chad Fairchild 83 44 53.0% 5817 44 Junior Valentine 77 41 53.2% 5919 46 Sean Barber 93 50 53.8% 5633 45 Mike Muchlinski 80 43 53.8% 6478 47 Jim Wolf 90 49 54.4% 5605 48 Tyler Jones 64 35 54.7% 4302 49 Ramon De Jesus 89 49 55.1% 5214 50 Lance Barrett 114 63 55.3% 6836 51 Brock Ballou 65 36 55.4% 4022 52 Doug Eddings 83 46 55.4% 6123 53 Charlie Ramos 81 45 55.6% 4443 54 Brennan Miller 79 44 55.7% 6141 55 Brian O'Nora 70 39 55.7% 4613 56 Malachi Moore 111 62 55.9% 6946 57 John Tumpane 89 50 56.2% 6018 58 Chris Guccione 96 54 56.3% 5939 59 Ben May 71 40 56.3% 5989 60 Alex MacKay 94 53 56.4% 6137 61 Paul Clemons 78 44 56.4% 6047 62 Alfonso Márquez 97 55 56.7% 6307 63 Jordan Baker 95 54 56.8% 6275 64 Hunter Wendelstedt 112 64 57.1% 6260 64 Chad Whitson 77 44 57.1% 5428 64 Jen Pawol 56 32 57.1% 3209 67 Ron Kulpa 71 41 57.7% 4164 68 Jacob Metz 64 37 57.8% 3836 69 Clint Vondrak 81 47 58.0% 5706 70 Bruce Dreckman 98 57 58.2% 6221 71 Willie Traynor 85 50 58.8% 7001 72 Laz Diaz 99 59 59.6% 6082 73 John Bacon 62 37 59.7% 3194 74 Marvin Hudson 67 40 59.7% 5035 75 Bill Miller 98 59 60.2% 6569 75 Mike Estabrook 98 59 60.2% 6334 77 Rob Drake 83 50 60.2% 6589 78 Lance Barksdale 99 60 60.6% 6120 79 Dan Bellino 97 59 60.8% 6432 80 Brian Walsh 88 54 61.4% 5537 81 Adrian Johnson 65 40 61.5% 4010 82 Roberto Ortiz 84 52 61.9% 5554 83 Cory Blaser 79 49 62.0% 5253 84 Manny Gonzalez 90 56 62.2% 5739 85 Felix Neon 40 25 62.5% 1782 86 Dan Iassogna 106 67 63.2% 6470 87 Chris Segal 98 62 63.3% 5920 88 Todd Tichenor 76 49 64.5% 5892 89 Stu Scheurwater 96 62 64.6% 6129 90 Andy Fletcher 68 50 73.5% 4297 91 CB Bucknor 9 7 77.8% 674
