Aug 22, 2026, 11:45 PM 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 Saturday, August 22.
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 Dexter Kelley 77 30 39.0% 5054 4 Louie Krupa 55 22 40.0% 3904 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 78 33 42.3% 6155 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 16 Alex Tosi 92 43 46.7% 6806 15 Jonathan Parra 60 28 46.7% 4349 19 D.J. Reyburn 100 47 47.0% 6584 17 Scott Barry 83 39 47.0% 6428 17 Adam Hamari 83 39 47.0% 7683 20 Edwin Moscoso 97 46 47.4% 6654 21 Nic Lentz 111 53 47.7% 7731 22 Will Little 117 56 47.9% 7569 23 Nestor Ceja 108 52 48.1% 7523 24 Chris Conroy 86 42 48.8% 6798 26 Emil Jimenez 95 47 49.5% 6728 25 Shane Livensparger 91 45 49.5% 6059 27 James Hoye 113 56 49.6% 7254 27 Adam Beck 113 56 49.6% 7477 29 Ryan Wills 110 55 50.0% 7115 29 Quinn Wolcott 108 54 50.0% 7615 31 Mark Wegner 103 52 50.5% 7387 32 Tripp Gibson 95 48 50.5% 7131 32 Tom Hanahan 95 48 50.5% 6660 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 Alex MacKay 102 56 54.9% 6785 50 Lance Barrett 131 72 55.0% 7668 51 Brian O'Nora 70 39 55.7% 4613 52 Brennan Miller 102 57 55.9% 7103 53 Willie Traynor 100 56 56.0% 8171 54 Chris Guccione 107 60 56.1% 6754 55 Jacob Metz 73 41 56.2% 4355 56 Alfonso Márquez 119 67 56.3% 7246 57 Ramon De Jesus 103 58 56.3% 6267 58 Chad Whitson 92 52 56.5% 6387 59 Brock Ballou 88 50 56.8% 5184 60 Jordan Baker 102 58 56.9% 6877 61 Malachi Moore 130 74 56.9% 7889 62 John Bacon 77 44 57.1% 4125 62 Paul Clemons 91 52 57.1% 6926 62 Charlie Ramos 98 56 57.1% 5262 65 John Tumpane 101 58 57.4% 6902 66 Tyler Jones 87 50 57.5% 5439 67 Ben May 80 46 57.5% 6319 68 Hunter Wendelstedt 134 78 58.2% 7185 69 Clint Vondrak 89 52 58.4% 6551 70 Bill Miller 106 62 58.5% 7127 70 Lance Barksdale 106 62 58.5% 6930 72 Bruce Dreckman 109 64 58.7% 7352 72 Brian Walsh 109 64 58.7% 6710 74 Todd Tichenor 91 54 59.3% 7023 75 Sean Barber 123 73 59.3% 6796 76 Marvin Hudson 69 41 59.4% 5345 77 Mike Estabrook 110 66 60.0% 6981 77 Jen Pawol 60 36 60.0% 3451 79 Laz Diaz 108 65 60.2% 6927 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 113 70 61.9% 7014 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
