Aug 27, 2026, 12:22 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 Wednesday, August 26.
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 Jansen Visconti 83 33 39.8% 6628 5 Dexter Kelley 85 34 40.0% 5346 6 Mark Ripperger 109 45 41.3% 7887 7 Erich Bacchus 79 33 41.8% 7554 8 Steven Jaschinski 62 26 41.9% 3920 9 James Jean 81 35 43.2% 6403 10 David Rackley 87 38 43.7% 6614 11 Edwin Jimenez 45 20 44.4% 3287 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 17 D.J. Reyburn 100 47 47.0% 6584 16 Adam Hamari 83 39 47.0% 8001 18 Nic Lentz 111 53 47.7% 7731 19 Will Little 117 56 47.9% 7569 20 Alex Tosi 94 45 47.9% 7092 21 Nestor Ceja 108 52 48.1% 7523 22 Scott Barry 89 43 48.3% 6794 23 Quinn Wolcott 111 54 48.6% 7901 24 Edwin Moscoso 104 51 49.0% 6934 25 Nick Mahrley 77 38 49.4% 6405 26 Emil Jimenez 95 47 49.5% 6728 29 Ryan Wills 117 58 49.6% 7462 27 James Hoye 113 56 49.6% 7254 27 Adam Beck 113 56 49.6% 7477 30 Tom Hanahan 100 50 50.0% 6987 30 Chris Conroy 92 46 50.0% 7047 30 Nate Tomlinson 92 46 50.0% 7659 30 Gabe Morales 88 44 50.0% 6681 34 Mark Wegner 103 52 50.5% 7387 35 Shane Livensparger 99 50 50.5% 6343 36 Tripp Gibson 95 48 50.5% 7131 37 Jeremie Rehak 85 43 50.6% 5756 38 Dan Merzel 109 56 51.4% 7281 39 Alan Porter 105 54 51.4% 6737 40 Vic Carapazza 101 52 51.5% 8221 41 Mike Muchlinski 91 47 51.6% 7652 42 Carlos Torres 77 40 51.9% 6523 43 Chad Fairchild 101 53 52.5% 7266 44 Junior Valentine 81 43 53.1% 6199 45 Jim Wolf 113 61 54.0% 6747 46 Jacob Metz 75 41 54.7% 4715 47 Alex MacKay 102 56 54.9% 6785 48 Brennan Miller 107 59 55.1% 7350 49 Ryan Blakney 83 46 55.4% 5755 50 Alfonso Márquez 124 69 55.6% 7491 51 Brian O'Nora 70 39 55.7% 4613 52 Paul Clemons 95 53 55.8% 7191 53 Willie Traynor 102 57 55.9% 8474 54 Doug Eddings 100 56 56.0% 7310 55 Ben May 82 46 56.1% 6677 56 Lance Barrett 139 78 56.1% 7953 57 Chris Guccione 114 64 56.1% 7100 58 Ron Kulpa 89 50 56.2% 5404 59 Ramon De Jesus 103 58 56.3% 6267 60 Bill Miller 110 62 56.4% 7431 61 Marvin Hudson 74 42 56.8% 5643 62 Brock Ballou 88 50 56.8% 5184 63 Jordan Baker 102 58 56.9% 6877 64 Chad Whitson 93 53 57.0% 6695 65 John Bacon 77 44 57.1% 4125 66 John Tumpane 101 58 57.4% 6902 67 Tyler Jones 87 50 57.5% 5439 68 Clint Vondrak 92 53 57.6% 6876 69 Malachi Moore 135 78 57.8% 8163 70 Charlie Ramos 105 61 58.1% 5631 71 Hunter Wendelstedt 144 84 58.3% 7499 72 Lance Barksdale 106 62 58.5% 6930 73 Bruce Dreckman 109 64 58.7% 7352 74 Mike Estabrook 114 67 58.8% 7255 75 Brian Walsh 115 68 59.1% 6969 76 Todd Tichenor 91 54 59.3% 7023 77 Sean Barber 123 73 59.3% 6796 78 Laz Diaz 112 67 59.8% 7219 79 Dan Bellino 115 69 60.0% 7537 79 Jen Pawol 60 36 60.0% 3451 81 Cory Blaser 109 66 60.6% 6888 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 102 64 62.7% 6626 88 Manny Gonzalez 111 71 64.0% 6835 89 Adrian Johnson 101 66 65.3% 5835 90 Andy Fletcher 94 66 70.2% 5438 91 CB Bucknor 9 7 77.8% 674
