Apr 30, 2026, 12:32 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 Wednesday, April 29.
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 Erich Bacchus 14 3 21.4% 1869 3 Dexter Kelley 13 3 23.1% 929 4 Louie Krupa 4 1 25.0% 264 5 Derek Thomas 23 6 26.1% 1718 6 John Tumpane 19 5 26.3% 1495 6 David Rackley 19 5 26.3% 1538 8 Jansen Visconti 16 5 31.3% 1410 9 Shane Livensparger 19 7 36.8% 1413 10 John Libka 16 6 37.5% 1701 11 Quinn Wolcott 26 10 38.5% 2184 12 Will Little 31 12 38.7% 2120 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 Jeremie Rehak 20 8 40.0% 1480 17 Chris Conroy 21 9 42.9% 1565 17 Alex MacKay 21 9 42.9% 1575 17 Edwin Jimenez 7 3 42.9% 904 20 Adam Beck 25 11 44.0% 1855 20 Edwin Moscoso 25 11 44.0% 1839 22 Alex Tosi 27 12 44.4% 1674 22 Alan Porter 18 8 44.4% 1728 22 Nate Tomlinson 18 8 44.4% 1799 22 Tyler Jones 9 4 44.4% 553 26 Ben May 11 5 45.5% 1007 27 Mark Ripperger 26 12 46.2% 1835 28 James Jean 15 7 46.7% 1461 29 Nic Lentz 38 18 47.4% 1963 29 Sean Barber 19 9 47.4% 1585 31 Jordan Baker 21 10 47.6% 1686 32 Malachi Moore 27 13 48.1% 2063 32 Austin Jones 27 13 48.1% 1529 34 Manny Gonzalez 29 14 48.3% 1586 35 Vic Carapazza 32 16 50.0% 2426 35 Ryan Blakney 26 13 50.0% 1616 35 Tripp Gibson 24 12 50.0% 1894 35 Roberto Ortiz 22 11 50.0% 1496 35 Dan Merzel 22 11 50.0% 1477 35 Jen Pawol 4 2 50.0% 308 41 Brian O'Nora 25 13 52.0% 1873 42 Nestor Ceja 23 12 52.2% 1664 43 James Hoye 19 10 52.6% 1473 43 Gabe Morales 19 10 52.6% 1753 45 Adam Hamari 15 8 53.3% 1512 45 Brennan Miller 15 8 53.3% 1525 47 Willie Traynor 13 7 53.8% 1579 48 Carlos Torres 22 12 54.5% 1739 49 Rob Drake 27 15 55.6% 1793 50 Adrian Johnson 34 19 55.9% 2028 51 D.J. Reyburn 25 14 56.0% 1559 52 Laz Diaz 32 18 56.3% 2137 53 Bill Miller 30 17 56.7% 2375 53 Chad Whitson 30 17 56.7% 1756 53 Bruce Dreckman 30 17 56.7% 1830 56 Marvin Hudson 21 12 57.1% 1650 56 Ryan Wills 28 16 57.1% 1768 56 Steven Jaschinski 7 4 57.1% 324 59 Alfonso Márquez 19 11 57.9% 1705 59 Nick Mahrley 19 11 57.9% 1475 61 Stu Scheurwater 17 10 58.8% 1429 62 Lance Barrett 32 19 59.4% 2066 63 Chris Guccione 20 12 60.0% 1476 64 Dan Bellino 33 20 60.6% 1761 65 Doug Eddings 28 17 60.7% 1874 66 Mike Muchlinski 23 14 60.9% 1693 67 Hunter Wendelstedt 41 25 61.0% 1973 68 Cory Blaser 18 11 61.1% 1156 69 Dan Iassogna 34 21 61.8% 2085 70 Mark Wegner 21 13 61.9% 1808 71 Brock Ballou 16 10 62.5% 1127 72 Chad Fairchild 22 14 63.6% 1698 73 Scott Barry 15 10 66.7% 1433 73 Junior Valentine 15 10 66.7% 1468 73 Tom Hanahan 21 14 66.7% 1394 76 Charlie Ramos 25 17 68.0% 1478 77 Todd Tichenor 22 15 68.2% 1935 77 John Bacon 22 15 68.2% 901 79 Jim Wolf 13 9 69.2% 1139 79 Mike Estabrook 26 18 69.2% 1787 81 Clint Vondrak 10 7 70.0% 1375 82 Brian Walsh 28 20 71.4% 1391 83 Paul Clemons 17 13 76.5% 1355 84 Chris Segal 31 24 77.4% 1696 85 CB Bucknor 9 7 77.8% 674 86 Ron Kulpa 14 11 78.6% 683 87 Jacob Metz 15 12 80.0% 534 88 Andy Fletcher 28 24 85.7% 1866 89 Felix Neon 3 3 100.0% 287
