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 Friday, August 28.
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 89 36 40.4% 5598 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 16 D.J. Reyburn 100 47 47.0% 6584 17 Adam Hamari 85 40 47.1% 8275 18 Nestor Ceja 110 52 47.3% 7820 19 Nic Lentz 116 55 47.4% 8035 20 Will Little 117 56 47.9% 7569 21 Alex Tosi 100 48 48.0% 7382 22 Scott Barry 89 43 48.3% 6794 23 Shane Livensparger 103 50 48.5% 6667 24 Quinn Wolcott 111 54 48.6% 7901 27 Ryan Wills 117 58 49.6% 7462 25 James Hoye 113 56 49.6% 7254 25 Adam Beck 113 56 49.6% 7477 28 Tripp Gibson 102 51 50.0% 7457 28 Emil Jimenez 102 51 50.0% 7034 28 Chris Conroy 92 46 50.0% 7047 28 Nate Tomlinson 92 46 50.0% 7659 28 Gabe Morales 88 44 50.0% 6681 28 Nick Mahrley 78 39 50.0% 6668 34 Jeremie Rehak 85 43 50.6% 5756 35 Tom Hanahan 106 54 50.9% 7273 36 Edwin Moscoso 113 58 51.3% 7206 37 Dan Merzel 109 56 51.4% 7281 38 Mark Wegner 105 54 51.4% 7696 39 Vic Carapazza 101 52 51.5% 8221 40 Mike Muchlinski 91 47 51.6% 7652 41 Carlos Torres 77 40 51.9% 6523 42 Chad Fairchild 101 53 52.5% 7266 43 Junior Valentine 81 43 53.1% 6199 44 Alan Porter 118 63 53.4% 7081 45 Jacob Metz 80 43 53.8% 4999 46 Jim Wolf 113 61 54.0% 6747 47 Alex MacKay 104 57 54.8% 7066 48 Brennan Miller 107 59 55.1% 7350 49 Ryan Blakney 83 46 55.4% 5755 49 Ben May 83 46 55.4% 6959 51 Alfonso Márquez 124 69 55.6% 7491 52 Brian O'Nora 70 39 55.7% 4613 53 Paul Clemons 95 53 55.8% 7191 54 Willie Traynor 102 57 55.9% 8474 55 Doug Eddings 100 56 56.0% 7310 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 Marvin Hudson 74 42 56.8% 5643 61 Brock Ballou 88 50 56.8% 5184 62 Jordan Baker 102 58 56.9% 6877 63 Chad Whitson 93 53 57.0% 6695 64 John Bacon 77 44 57.1% 4125 65 Tyler Jones 87 50 57.5% 5439 66 Clint Vondrak 92 53 57.6% 6876 67 John Tumpane 104 60 57.7% 7172 68 Malachi Moore 135 78 57.8% 8163 69 Charlie Ramos 105 61 58.1% 5631 70 Hunter Wendelstedt 144 84 58.3% 7499 71 Lance Barksdale 106 62 58.5% 6930 72 Bruce Dreckman 109 64 58.7% 7352 73 Brian Walsh 115 68 59.1% 6969 74 Bill Miller 118 70 59.3% 7783 75 Todd Tichenor 91 54 59.3% 7023 76 Sean Barber 123 73 59.3% 6796 77 Laz Diaz 117 70 59.8% 7500 78 Dan Bellino 115 69 60.0% 7537 78 Jen Pawol 60 36 60.0% 3451 80 Mike Estabrook 123 74 60.2% 7578 81 Chris Segal 111 67 60.4% 7006 82 Cory Blaser 109 66 60.6% 6888 83 Rob Drake 97 59 60.8% 7157 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 97 67 69.1% 5705 91 CB Bucknor 9 7 77.8% 674
