Apr 29, 2026, 01:56 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 Tuesday, April 28.
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 Erich Bacchus 14 3 21.4% 1869 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 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 21 9 42.9% 1565 19 Alex MacKay 21 9 42.9% 1575 19 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 25 Alan Porter 18 8 44.4% 1728 27 Ben May 11 5 45.5% 1007 28 Nic Lentz 38 18 47.4% 1963 28 Sean Barber 19 9 47.4% 1585 30 Jordan Baker 21 10 47.6% 1686 30 Austin Jones 21 10 47.6% 1254 32 Malachi Moore 27 13 48.1% 2063 33 Manny Gonzalez 29 14 48.3% 1586 34 Ryan Blakney 26 13 50.0% 1616 34 Tripp Gibson 24 12 50.0% 1894 34 Roberto Ortiz 22 11 50.0% 1496 34 Dan Merzel 22 11 50.0% 1477 34 Nate Tomlinson 16 8 50.0% 1496 34 Jen Pawol 4 2 50.0% 308 40 Brian O'Nora 25 13 52.0% 1873 41 Nestor Ceja 23 12 52.2% 1664 42 James Hoye 19 10 52.6% 1473 42 Gabe Morales 19 10 52.6% 1753 44 Adam Hamari 15 8 53.3% 1512 44 Brennan Miller 15 8 53.3% 1525 46 Willie Traynor 13 7 53.8% 1579 47 Carlos Torres 22 12 54.5% 1739 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 Chad Whitson 30 17 56.7% 1756 53 Bruce Dreckman 30 17 56.7% 1830 55 Marvin Hudson 21 12 57.1% 1650 55 Ryan Wills 28 16 57.1% 1768 55 Steven Jaschinski 7 4 57.1% 324 58 Nick Mahrley 19 11 57.9% 1475 59 Stu Scheurwater 17 10 58.8% 1429 60 Lance Barrett 32 19 59.4% 2066 61 Chris Guccione 20 12 60.0% 1476 61 Alfonso Márquez 15 9 60.0% 1378 63 Dan Bellino 33 20 60.6% 1761 64 Doug Eddings 28 17 60.7% 1874 65 Mike Muchlinski 23 14 60.9% 1693 66 Hunter Wendelstedt 41 25 61.0% 1973 67 Cory Blaser 18 11 61.1% 1156 68 Dan Iassogna 34 21 61.8% 2085 69 Mark Wegner 21 13 61.9% 1808 70 Brock Ballou 16 10 62.5% 1127 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 Tom Hanahan 21 14 66.7% 1394 73 Tyler Jones 3 2 66.7% 283 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
