May 10, 2026, 12:41 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, pitchers, catchers, teams and umpires for the 2026 MLB season.
Data updated through Saturday, May 9.
Batter ABS Challenge Leaders Pitcher ABS Challenge Leaders Catcher ABS Challenge Leaders MLB Team ABS Challenge Rankings Umpire ABS Challenge Leaders Rank UmpireName Chal ChalW Chal% P 1 Emil Jimenez 14 3 21.4% 1264 2 Dexter Kelley 17 4 23.5% 1203 3 Louie Krupa 4 1 25.0% 264 4 John Tumpane 23 6 26.1% 2036 4 Derek Thomas 23 6 26.1% 1718 6 Erich Bacchus 17 5 29.4% 2158 7 Edwin Jimenez 10 3 30.0% 1199 8 David Rackley 30 10 33.3% 2382 9 John Libka 21 8 38.1% 1977 10 Will Little 34 13 38.2% 2385 11 Jansen Visconti 23 9 39.1% 1969 12 Ryan Additon 34 14 41.2% 2207 13 Nic Lentz 46 19 41.3% 2608 14 Jeremie Rehak 26 11 42.3% 1760 15 Brennan Miller 21 9 42.9% 2060 16 Alex MacKay 23 10 43.5% 1871 17 Lance Barksdale 32 14 43.8% 2300 18 Chris Conroy 27 12 44.4% 2124 19 James Hoye 29 13 44.8% 2399 19 Alex Tosi 29 13 44.8% 1924 19 Austin Jones 29 13 44.8% 1855 22 Mark Ripperger 31 14 45.2% 2459 23 Ramon De Jesus 22 10 45.5% 1216 23 Tyler Jones 11 5 45.5% 835 25 Shane Livensparger 26 12 46.2% 1993 26 Adam Beck 28 13 46.4% 2128 27 Alan Porter 30 14 46.7% 2200 28 Ben May 19 9 47.4% 1879 29 Adam Hamari 23 11 47.8% 2084 30 Jordan Baker 25 12 48.0% 1992 30 Nate Tomlinson 25 12 48.0% 2388 32 Dan Merzel 27 13 48.1% 1806 33 Sean Barber 29 14 48.3% 2122 34 Edwin Moscoso 33 16 48.5% 2146 36 Vic Carapazza 37 18 48.6% 3055 35 Quinn Wolcott 35 17 48.6% 2479 37 Manny Gonzalez 39 19 48.7% 2402 38 Malachi Moore 38 19 50.0% 2968 38 Brian O'Nora 32 16 50.0% 2227 38 Gabe Morales 30 15 50.0% 2233 38 Steven Jaschinski 12 6 50.0% 585 38 Jen Pawol 4 2 50.0% 308 43 Ryan Blakney 29 15 51.7% 1961 44 James Jean 21 11 52.4% 1748 45 Tripp Gibson 30 16 53.3% 2434 46 Bruce Dreckman 43 23 53.5% 2641 47 Carlos Torres 26 14 53.8% 2263 48 D.J. Reyburn 33 18 54.5% 2077 48 Ryan Wills 33 18 54.5% 2053 50 Nestor Ceja 29 16 55.2% 2185 51 Mark Wegner 27 15 55.6% 2468 52 Adrian Johnson 34 19 55.9% 2028 53 Scott Barry 25 14 56.0% 2044 54 Roberto Ortiz 37 21 56.8% 2476 55 Rob Drake 35 20 57.1% 2293 55 Charlie Ramos 42 24 57.1% 2286 57 Chad Fairchild 26 15 57.7% 1992 57 Cory Blaser 26 15 57.7% 1698 59 Dan Bellino 38 22 57.9% 2328 59 Nick Mahrley 19 11 57.9% 1475 61 Bill Miller 36 21 58.3% 2719 62 Laz Diaz 41 24 58.5% 2482 63 Mike Muchlinski 29 17 58.6% 2331 64 Chad Whitson 34 20 58.8% 2045 64 Brock Ballou 17 10 58.8% 1446 66 Marvin Hudson 22 13 59.1% 1913 66 Lance Barrett 44 26 59.1% 2664 66 Stu Scheurwater 22 13 59.1% 1752 69 Chris Guccione 32 19 59.4% 2050 70 Dan Iassogna 37 22 59.5% 2377 71 Junior Valentine 20 12 60.0% 1795 72 Doug Eddings 31 19 61.3% 2190 73 Todd Tichenor 24 15 62.5% 2164 74 Alfonso Márquez 27 17 63.0% 2318 75 Mike Estabrook 36 23 63.9% 2657 76 Hunter Wendelstedt 45 29 64.4% 2242 77 Clint Vondrak 17 11 64.7% 1956 78 Paul Clemons 26 17 65.4% 2003 79 Jim Wolf 18 12 66.7% 1446 79 Jacob Metz 30 20 66.7% 1503 79 Tom Hanahan 30 20 66.7% 2018 79 Willie Traynor 21 14 66.7% 2192 83 John Bacon 40 27 67.5% 1662 84 Brian Walsh 30 22 73.3% 1667 85 Chris Segal 32 24 75.0% 1960 85 Jonathan Parra 4 3 75.0% 315 87 CB Bucknor 9 7 77.8% 674 88 Ron Kulpa 14 11 78.6% 683 89 Andy Fletcher 32 27 84.4% 2152 90 Felix Neon 3 3 100.0% 287
