Apr 26, 2026, 09:56 PM 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 Sunday, April 26.
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 10 1 10.0% 970 2 Dexter Kelley 8 1 12.5% 584 3 John Tumpane 14 3 21.4% 1199 4 Erich Bacchus 13 3 23.1% 1562 5 Louie Krupa 4 1 25.0% 264 6 Derek Thomas 23 6 26.1% 1718 7 David Rackley 19 5 26.3% 1538 8 Jansen Visconti 16 5 31.3% 1410 9 James Jean 12 4 33.3% 1203 10 Shane Livensparger 19 7 36.8% 1413 11 Will Little 27 10 37.0% 1847 12 Quinn Wolcott 26 10 38.5% 2184 13 Ramon De Jesus 18 7 38.9% 909 14 Lance Barksdale 23 9 39.1% 1757 15 Ryan Additon 28 11 39.3% 1924 16 Mark Ripperger 20 8 40.0% 1542 16 Jeremie Rehak 20 8 40.0% 1480 16 John Libka 15 6 40.0% 1396 19 Chris Conroy 17 7 41.2% 1276 20 Alex MacKay 21 9 42.9% 1575 20 Edwin Jimenez 7 3 42.9% 904 22 Vic Carapazza 23 10 43.5% 2118 23 Adam Beck 25 11 44.0% 1855 23 Edwin Moscoso 25 11 44.0% 1839 25 Alex Tosi 27 12 44.4% 1674 26 Ben May 11 5 45.5% 1007 27 Alan Porter 13 6 46.2% 1463 28 Jordan Baker 17 8 47.1% 1411 29 Austin Jones 21 10 47.6% 1254 30 Malachi Moore 27 13 48.1% 2063 31 Manny Gonzalez 29 14 48.3% 1586 32 Nic Lentz 32 16 50.0% 1654 32 Ryan Blakney 26 13 50.0% 1616 32 Roberto Ortiz 22 11 50.0% 1496 32 Tripp Gibson 20 10 50.0% 1591 32 Carlos Torres 20 10 50.0% 1467 32 Dan Merzel 16 8 50.0% 1129 32 Nate Tomlinson 16 8 50.0% 1496 32 Jen Pawol 4 2 50.0% 308 40 Brian O'Nora 25 13 52.0% 1873 41 James Hoye 19 10 52.6% 1473 42 Adam Hamari 15 8 53.3% 1512 42 Marvin Hudson 15 8 53.3% 1379 42 Sean Barber 15 8 53.3% 1240 42 Brennan Miller 15 8 53.3% 1285 46 Willie Traynor 13 7 53.8% 1579 47 Nestor Ceja 20 11 55.0% 1390 48 Bill Miller 29 16 55.2% 2035 49 Laz Diaz 27 15 55.6% 1816 49 Rob Drake 27 15 55.6% 1793 51 Adrian Johnson 34 19 55.9% 2028 52 D.J. Reyburn 25 14 56.0% 1559 53 Gabe Morales 16 9 56.3% 1436 54 Bruce Dreckman 30 17 56.7% 1830 55 Ryan Wills 28 16 57.1% 1768 55 Steven Jaschinski 7 4 57.1% 324 57 Nick Mahrley 19 11 57.9% 1475 58 Lance Barrett 29 17 58.6% 1755 59 Stu Scheurwater 17 10 58.8% 1429 60 Dan Bellino 27 16 59.3% 1436 61 Chris Guccione 20 12 60.0% 1476 61 Hunter Wendelstedt 35 21 60.0% 1661 61 Alfonso Márquez 15 9 60.0% 1378 64 Mike Muchlinski 23 14 60.9% 1693 65 Cory Blaser 18 11 61.1% 1156 66 Dan Iassogna 34 21 61.8% 2085 67 Mark Wegner 21 13 61.9% 1808 68 Doug Eddings 24 15 62.5% 1587 68 Brock Ballou 16 10 62.5% 1127 70 Chad Whitson 27 17 63.0% 1480 71 Chad Fairchild 22 14 63.6% 1698 72 Scott Barry 14 9 64.3% 1183 73 Junior Valentine 15 10 66.7% 1468 73 Tyler Jones 3 2 66.7% 283 75 Charlie Ramos 25 17 68.0% 1478 76 Todd Tichenor 22 15 68.2% 1935 76 John Bacon 22 15 68.2% 901 78 Jim Wolf 13 9 69.2% 1139 78 Mike Estabrook 26 18 69.2% 1787 80 Brian Walsh 28 20 71.4% 1391 81 Tom Hanahan 18 13 72.2% 1137 82 Paul Clemons 17 13 76.5% 1355 83 CB Bucknor 9 7 77.8% 674 84 Chris Segal 28 22 78.6% 1428 84 Ron Kulpa 14 11 78.6% 683 86 Clint Vondrak 5 4 80.0% 1099 87 Jacob Metz 6 5 83.3% 244 88 Andy Fletcher 28 24 85.7% 1866 89 Felix Neon 3 3 100.0% 287
