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 Sunday, August 23.
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 71 26 36.6% 5091 3 Louie Krupa 58 22 37.9% 4212 4 Dexter Kelley 85 34 40.0% 5346 5 Steven Jaschinski 57 23 40.4% 3625 6 Jansen Visconti 81 33 40.7% 6299 7 Mark Ripperger 107 44 41.1% 7596 8 Erich Bacchus 74 31 41.9% 7211 9 Edwin Jimenez 38 16 42.1% 2994 10 James Jean 81 35 43.2% 6403 11 David Rackley 78 34 43.6% 6249 12 John Libka 83 37 44.6% 6732 13 Austin Jones 62 28 45.2% 4971 14 Ryan Additon 118 54 45.8% 7687 15 Jonathan Parra 60 28 46.7% 4349 18 D.J. Reyburn 100 47 47.0% 6584 16 Scott Barry 83 39 47.0% 6428 16 Adam Hamari 83 39 47.0% 8001 19 Nic Lentz 111 53 47.7% 7731 20 Will Little 117 56 47.9% 7569 21 Alex Tosi 94 45 47.9% 7092 22 Nestor Ceja 108 52 48.1% 7523 23 Chris Conroy 86 42 48.8% 6798 24 Edwin Moscoso 104 51 49.0% 6934 25 Emil Jimenez 95 47 49.5% 6728 28 Ryan Wills 117 58 49.6% 7462 26 James Hoye 113 56 49.6% 7254 26 Adam Beck 113 56 49.6% 7477 29 Quinn Wolcott 108 54 50.0% 7615 29 Tom Hanahan 100 50 50.0% 6987 31 Mark Wegner 103 52 50.5% 7387 32 Shane Livensparger 99 50 50.5% 6343 33 Tripp Gibson 95 48 50.5% 7131 34 Gabe Morales 85 43 50.6% 6394 34 Jeremie Rehak 85 43 50.6% 5756 36 Nick Mahrley 71 36 50.7% 6085 37 Dan Merzel 100 51 51.0% 6868 38 Vic Carapazza 98 50 51.0% 7928 39 Nate Tomlinson 88 45 51.1% 7409 40 Carlos Torres 72 37 51.4% 6200 41 Alan Porter 102 53 52.0% 6436 42 Jim Wolf 105 55 52.4% 6498 43 Chad Fairchild 95 50 52.6% 6975 43 Ryan Blakney 76 40 52.6% 5399 45 Junior Valentine 81 43 53.1% 6199 46 Mike Muchlinski 88 47 53.4% 7368 47 Ron Kulpa 83 45 54.2% 5085 48 Doug Eddings 94 51 54.3% 6915 49 Jacob Metz 75 41 54.7% 4715 50 Alex MacKay 102 56 54.9% 6785 51 Lance Barrett 131 72 55.0% 7668 52 Brian O'Nora 70 39 55.7% 4613 53 Brennan Miller 102 57 55.9% 7103 54 Willie Traynor 100 56 56.0% 8171 55 Chris Guccione 107 60 56.1% 6754 56 Ben May 82 46 56.1% 6677 57 Alfonso Márquez 119 67 56.3% 7246 58 Ramon De Jesus 103 58 56.3% 6267 59 Bill Miller 110 62 56.4% 7431 60 Chad Whitson 92 52 56.5% 6387 61 Brock Ballou 88 50 56.8% 5184 62 Jordan Baker 102 58 56.9% 6877 63 Malachi Moore 130 74 56.9% 7889 64 John Bacon 77 44 57.1% 4125 64 Paul Clemons 91 52 57.1% 6926 64 Charlie Ramos 98 56 57.1% 5262 67 John Tumpane 101 58 57.4% 6902 68 Tyler Jones 87 50 57.5% 5439 69 Hunter Wendelstedt 134 78 58.2% 7185 70 Clint Vondrak 89 52 58.4% 6551 71 Lance Barksdale 106 62 58.5% 6930 72 Bruce Dreckman 109 64 58.7% 7352 72 Brian Walsh 109 64 58.7% 6710 74 Mike Estabrook 114 67 58.8% 7255 75 Todd Tichenor 91 54 59.3% 7023 76 Sean Barber 123 73 59.3% 6796 77 Marvin Hudson 69 41 59.4% 5345 78 Laz Diaz 112 67 59.8% 7219 79 Jen Pawol 60 36 60.0% 3451 80 Cory Blaser 103 62 60.2% 6578 81 Dan Bellino 109 66 60.6% 7280 82 Rob Drake 97 59 60.8% 7157 83 Chris Segal 110 67 60.9% 6775 84 Stu Scheurwater 116 72 62.1% 7316 85 Felix Neon 45 28 62.2% 2097 86 Dan Iassogna 126 79 62.7% 7646 87 Roberto Ortiz 97 61 62.9% 6384 88 Manny Gonzalez 105 68 64.8% 6564 89 Adrian Johnson 95 62 65.3% 5610 90 Andy Fletcher 94 66 70.2% 5438 91 CB Bucknor 9 7 77.8% 674
