Aug 20, 2026, 12:40 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 Thursday, August 20.
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 100 41 41.0% 7271 8 Edwin Jimenez 38 16 42.1% 2994 9 James Jean 78 33 42.3% 6155 10 Erich Bacchus 72 31 43.1% 6878 11 David Rackley 78 34 43.6% 6249 11 John Libka 78 34 43.6% 6435 13 Austin Jones 62 28 45.2% 4971 14 Jonathan Parra 55 25 45.5% 4039 15 Ryan Additon 118 54 45.8% 7687 16 Alex Tosi 92 43 46.7% 6806 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 97 46 47.4% 6654 21 Nestor Ceja 108 52 48.1% 7523 21 Scott Barry 81 39 48.1% 6140 23 D.J. Reyburn 97 47 48.5% 6295 24 Chris Conroy 86 42 48.8% 6798 27 Adam Beck 109 54 49.5% 7187 26 Emil Jimenez 95 47 49.5% 6728 25 Shane Livensparger 91 45 49.5% 6059 28 Ryan Wills 110 55 50.0% 7115 28 Quinn Wolcott 108 54 50.0% 7615 30 James Hoye 109 55 50.5% 6940 31 Mark Wegner 103 52 50.5% 7387 32 Vic Carapazza 97 49 50.5% 7692 33 Tripp Gibson 95 48 50.5% 7131 33 Tom Hanahan 95 48 50.5% 6660 35 Gabe Morales 85 43 50.6% 6394 35 Jeremie Rehak 85 43 50.6% 5756 37 Nick Mahrley 71 36 50.7% 6085 38 Dan Merzel 100 51 51.0% 6868 39 Carlos Torres 72 37 51.4% 6200 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 46 Chad Fairchild 93 50 53.8% 6681 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 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 Chad Whitson 92 52 56.5% 6387 58 Brock Ballou 88 50 56.8% 5184 59 Jordan Baker 102 58 56.9% 6877 60 Alfonso Márquez 114 65 57.0% 6953 61 John Bacon 77 44 57.1% 4125 61 Paul Clemons 91 52 57.1% 6926 61 Malachi Moore 119 68 57.1% 7526 61 Charlie Ramos 98 56 57.1% 5262 61 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 Hunter Wendelstedt 134 78 58.2% 7185 70 Clint Vondrak 89 52 58.4% 6551 71 Bill Miller 106 62 58.5% 7127 71 Lance Barksdale 106 62 58.5% 6930 71 Bruce Dreckman 106 62 58.5% 7085 74 Brian Walsh 107 63 58.9% 6476 75 Dan Bellino 103 61 59.2% 6969 76 Sean Barber 123 73 59.3% 6796 77 Marvin Hudson 69 41 59.4% 5345 78 Mike Estabrook 110 66 60.0% 6981 79 Laz Diaz 108 65 60.2% 6927 80 Cory Blaser 103 62 60.2% 6578 81 Todd Tichenor 87 53 60.9% 6760 82 Rob Drake 90 55 61.1% 6875 83 Stu Scheurwater 113 70 61.9% 7014 84 Chris Segal 108 67 62.0% 6501 85 Felix Neon 45 28 62.2% 2097 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
