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 Wednesday, September 2.
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 23 7 30.4% 2577 2 Derek Thomas 75 27 36.0% 5384 3 Louie Krupa 58 22 37.9% 4212 4 Jansen Visconti 87 35 40.2% 6892 5 Steven Jaschinski 64 26 40.6% 4189 6 Dexter Kelley 92 38 41.3% 5877 7 Erich Bacchus 82 35 42.7% 7845 8 Mark Ripperger 116 50 43.1% 8214 9 James Jean 81 35 43.2% 6403 10 Austin Jones 63 28 44.4% 5244 11 Ryan Additon 123 55 44.7% 7992 12 David Rackley 91 41 45.1% 6888 13 John Libka 88 40 45.5% 7026 13 Edwin Jimenez 55 25 45.5% 3889 16 Nic Lentz 122 57 46.7% 8666 15 Jonathan Parra 60 28 46.7% 4349 17 D.J. Reyburn 100 47 47.0% 6584 18 Adam Hamari 85 40 47.1% 8275 19 Nestor Ceja 114 54 47.4% 8141 20 Shane Livensparger 109 52 47.7% 7009 21 Alex Tosi 100 48 48.0% 7382 22 Will Little 123 60 48.8% 7903 23 Quinn Wolcott 112 55 49.1% 8187 25 Emil Jimenez 105 52 49.5% 7344 24 Nate Tomlinson 95 47 49.5% 7973 27 Ryan Wills 117 58 49.6% 7462 26 James Hoye 113 56 49.6% 7254 28 Adam Beck 117 59 50.4% 7796 29 Chris Conroy 97 49 50.5% 7327 30 Scott Barry 95 48 50.5% 7078 31 Jeremie Rehak 89 45 50.6% 6052 32 Nick Mahrley 83 42 50.6% 6988 33 Dan Merzel 118 60 50.8% 7835 34 Vic Carapazza 108 55 50.9% 8788 35 Tripp Gibson 106 54 50.9% 7791 35 Tom Hanahan 106 54 50.9% 7273 37 Gabe Morales 94 48 51.1% 7188 38 Edwin Moscoso 113 58 51.3% 7206 39 Mark Wegner 105 54 51.4% 7696 40 Mike Muchlinski 96 50 52.1% 7963 41 Chad Fairchild 101 53 52.5% 7266 42 Jacob Metz 83 44 53.0% 5305 43 Junior Valentine 81 43 53.1% 6199 44 Carlos Torres 79 42 53.2% 6787 45 Alan Porter 118 63 53.4% 7408 46 Jim Wolf 117 63 53.8% 7029 47 Ben May 87 47 54.0% 7214 48 John Bacon 85 46 54.1% 4464 49 Alex MacKay 107 58 54.2% 7399 50 Brennan Miller 109 60 55.0% 7709 51 Willie Traynor 107 59 55.1% 8771 52 Ron Kulpa 92 51 55.4% 5974 53 Paul Clemons 101 56 55.4% 7493 54 Chris Guccione 119 66 55.5% 7389 55 Alfonso Márquez 124 69 55.6% 7491 56 Ramon De Jesus 106 59 55.7% 6589 57 Brian O'Nora 70 39 55.7% 4613 58 Malachi Moore 140 79 56.4% 8411 59 Tyler Jones 92 52 56.5% 5779 60 Lance Barrett 145 82 56.6% 8242 61 Brock Ballou 88 50 56.8% 5184 62 Jordan Baker 102 58 56.9% 6877 63 Lance Barksdale 109 62 56.9% 7237 64 Todd Tichenor 97 56 57.7% 7408 64 Clint Vondrak 97 56 57.7% 7158 66 Brian Walsh 119 69 58.0% 7253 67 Ryan Blakney 93 54 58.1% 6082 68 Chad Whitson 98 57 58.2% 7035 69 John Tumpane 110 64 58.2% 7476 70 Dan Bellino 120 70 58.3% 7848 71 Doug Eddings 106 62 58.5% 7613 72 Bruce Dreckman 109 64 58.7% 7352 73 Laz Diaz 119 70 58.8% 7765 74 Marvin Hudson 81 48 59.3% 5930 74 Charlie Ramos 108 64 59.3% 5884 76 Bill Miller 118 70 59.3% 7783 77 Hunter Wendelstedt 158 94 59.5% 8132 78 Jen Pawol 60 36 60.0% 3451 79 Mike Estabrook 123 74 60.2% 7578 80 Chris Segal 116 70 60.3% 7282 81 Sean Barber 129 78 60.5% 7059 82 Cory Blaser 109 66 60.6% 6888 83 Stu Scheurwater 121 74 61.2% 7628 84 Roberto Ortiz 106 65 61.3% 6923 85 Rob Drake 99 61 61.6% 7464 86 Felix Neon 45 28 62.2% 2097 87 Dan Iassogna 136 85 62.5% 8052 88 Manny Gonzalez 119 75 63.0% 7132 89 Adrian Johnson 107 70 65.4% 6095 90 Andy Fletcher 97 67 69.1% 5705 91 CB Bucknor 9 7 77.8% 674
