Aug 19, 2026, 01:02 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 Tuesday, August 18.
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 Edwin Jimenez 31 12 38.7% 2710 4 Dexter Kelley 72 29 40.3% 4713 5 Jansen Visconti 81 33 40.7% 6299 6 Mark Ripperger 100 41 41.0% 7271 7 Louie Krupa 51 21 41.2% 3542 8 James Jean 75 32 42.7% 5886 9 Erich Bacchus 72 31 43.1% 6878 10 Steven Jaschinski 53 23 43.4% 3337 11 David Rackley 78 34 43.6% 6249 11 John Libka 78 34 43.6% 6435 14 Ryan Additon 115 52 45.2% 7395 13 Austin Jones 62 28 45.2% 4971 15 Jonathan Parra 55 25 45.5% 4039 16 Alex Tosi 90 42 46.7% 6526 17 Adam Hamari 83 39 47.0% 7683 18 Nic Lentz 108 51 47.2% 7465 19 Will Little 110 52 47.3% 7274 20 Edwin Moscoso 94 45 47.9% 6328 21 Nestor Ceja 108 52 48.1% 7523 21 Scott Barry 81 39 48.1% 6140 23 Chris Conroy 83 40 48.2% 6485 24 D.J. Reyburn 97 47 48.5% 6295 25 Quinn Wolcott 102 50 49.0% 7278 28 Adam Beck 109 54 49.5% 7187 27 Emil Jimenez 95 47 49.5% 6728 26 Shane Livensparger 91 45 49.5% 6059 29 James Hoye 109 55 50.5% 6940 30 Mark Wegner 103 52 50.5% 7387 31 Vic Carapazza 97 49 50.5% 7692 32 Tripp Gibson 95 48 50.5% 7131 33 Gabe Morales 85 43 50.6% 6394 33 Jeremie Rehak 85 43 50.6% 5756 35 Nick Mahrley 71 36 50.7% 6085 36 Ryan Wills 106 54 50.9% 6793 37 Carlos Torres 68 35 51.5% 5895 38 Dan Merzel 95 49 51.6% 6542 39 Tom Hanahan 89 46 51.7% 6385 40 Nate Tomlinson 85 44 51.8% 7097 41 Alan Porter 102 53 52.0% 6436 42 Ryan Blakney 73 38 52.1% 5121 43 Jim Wolf 105 55 52.4% 6498 44 Junior Valentine 81 43 53.1% 6199 45 Mike Muchlinski 88 47 53.4% 7368 47 Chad Fairchild 93 50 53.8% 6681 46 Ron Kulpa 80 43 53.8% 4817 48 Doug Eddings 94 51 54.3% 6915 49 Lance Barrett 126 69 54.8% 7350 50 Alex MacKay 102 56 54.9% 6785 51 Ramon De Jesus 97 54 55.7% 6002 52 Brian O'Nora 70 39 55.7% 4613 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 Brennan Miller 94 53 56.4% 6803 57 Brock Ballou 88 50 56.8% 5184 58 Jordan Baker 102 58 56.9% 6877 59 Alfonso Márquez 114 65 57.0% 6953 60 John Bacon 77 44 57.1% 4125 60 Paul Clemons 91 52 57.1% 6926 60 Malachi Moore 119 68 57.1% 7526 60 Charlie Ramos 98 56 57.1% 5262 60 Clint Vondrak 84 48 57.1% 6277 60 Jen Pawol 56 32 57.1% 3209 66 Tyler Jones 87 50 57.5% 5439 67 Ben May 80 46 57.5% 6319 68 John Tumpane 99 57 57.6% 6591 69 Chad Whitson 88 51 58.0% 6128 70 Bill Miller 103 60 58.3% 6840 71 Lance Barksdale 106 62 58.5% 6930 71 Bruce Dreckman 106 62 58.5% 7085 73 Sean Barber 116 68 58.6% 6502 74 Brian Walsh 107 63 58.9% 6476 75 Hunter Wendelstedt 129 76 58.9% 6844 76 Dan Bellino 103 61 59.2% 6969 77 Marvin Hudson 69 41 59.4% 5345 78 Mike Estabrook 104 62 59.6% 6662 79 Laz Diaz 108 65 60.2% 6927 80 Cory Blaser 98 59 60.2% 6253 81 Todd Tichenor 87 53 60.9% 6760 82 Rob Drake 90 55 61.1% 6875 83 Chris Segal 108 67 62.0% 6501 84 Felix Neon 45 28 62.2% 2097 85 Stu Scheurwater 107 67 62.6% 6749 86 Roberto Ortiz 97 61 62.9% 6384 87 Dan Iassogna 118 75 63.6% 7321 88 Manny Gonzalez 103 66 64.1% 6327 89 Adrian Johnson 88 57 64.8% 5248 90 Andy Fletcher 88 63 71.6% 5114 91 CB Bucknor 9 7 77.8% 674
