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 Wednesday, June 24.

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Batter ABS Challenge Leaders

Rank	PlayerName	Team	BatChallSuccess	BatChallenges	BatChallSuccess%
1	Sal Stewart	CIN	20	30	66.7%
2	Jose Altuve	HOU	14	19	73.7%
3	Kevin McGonigle	DET	12	17	70.6%
4	Maikel Garcia	KC	11	18	61.1%
4	Jose Caballero	NYY	11	18	61.1%
6	Davis Schneider	TOR	10	13	76.9%
6	Bryce Harper	PHI	10	20	50.0%
8	Isaac Paredes	HOU	9	9	100.0%
8	Xander Bogaerts	SD	9	14	64.3%
8	Kyle Schwarber	PHI	9	14	64.3%
8	Ivan Herrera	STL	9	15	60.0%
8	Mark Vientos	NYM	9	16	56.3%
8	Luke Keaschall	MIN	9	17	52.9%
8	Gary Sanchez	MIL	9	22	40.9%
15	Bryce Eldridge	SF	8	8	100.0%
15	CJ Abrams	WSH	8	9	88.9%
15	Nick Kurtz	ATH	8	10	80.0%
15	Josh Bell	MIN	8	12	66.7%
15	Bryan Reynolds	PIT	8	15	53.3%
15	Munetaka Murakami	CWS	8	15	53.3%
15	Austin Martin	MIN	8	17	47.1%
15	Nolan Schanuel	LAA	8	19	42.1%

Catcher ABS Challenge Leaders

Rank	PlayerName	Team	CatChallSuccess	CatChallenges	CatChallSuccess%
1	William Contreras	MIL	53	94	56.4%
2	Tyler Stephenson	CIN	47	65	72.3%
3	Salvador Perez	KC	41	57	71.9%
3	Victor Caratini	MIN	41	61	67.2%
3	Hunter Goodman	COL	41	63	65.1%
6	Logan O’Hoppe	LAA	39	66	59.1%
6	Shea Langeliers	ATH	39	68	57.4%
8	Nick Fortes	TB	38	62	61.3%
9	Dillon Dingler	DET	37	54	68.5%
10	Edgar Quero	CWS	35	75	46.7%
11	Patrick Bailey	CLE	33	59	55.9%
12	Will Smith	LAD	31	47	66.0%
12	Austin Wells	NYY	31	49	63.3%
14	Carson Kelly	CHC	29	38	76.3%
15	Miguel Amaya	CHC	27	39	69.2%
15	Pedro Pages	STL	27	40	67.5%
15	Joe Mack	MIA	27	47	57.4%
15	Liam Hicks	MIA	27	48	56.3%
19	J.T. Realmuto	PHI	26	32	81.3%
20	Keibert Ruiz	WSH	25	47	53.2%
20	Christian Vazquez	HOU	25	52	48.1%

MLB Team ABS Challenge Rankings

Team	BatChallSuccess%	Pitch/CatchChallSuccess%	TotChallSuccess%
Arizona Diamondbacks	57.1% (2)	65.7% (4)	61.5% (2)
Athletics	53.3% (4)	57.8% (20)	56.0% (10)
Atlanta Braves	37.3% (30)	61.5% (11)	51.3% (22)
Baltimore Orioles	49.4% (10)	48.5% (26)	49.0% (25)
Boston Red Sox	45.1% (20)	59.7% (15)	51.9% (17)
Chicago Cubs	42.1% (24)	70.2% (2)	56.9% (5)
Chicago White Sox	49.3% (11)	46.2% (29)	47.4% (27)
Cincinnati Reds	54.9% (3)	70.4% (1)	62.2% (1)
Cleveland Guardians	38.7% (28)	50.6% (24)	44.3% (29)
Colorado Rockies	39.5% (27)	61.3% (12)	51.6% (20)
Detroit Tigers	53.1% (6)	67.6% (3)	59.9% (3)
Houston Astros	59.6% (1)	48.9% (25)	54.3% (15)
Kansas City Royals	52.6% (7)	59.0% (18)	56.4% (8)
Los Angeles Angels	40.7% (26)	59.8% (14)	51.1% (23)
Los Angeles Dodgers	53.2% (5)	63.3% (9)	58.2% (4)
Miami Marlins	50.0% (8)	59.5% (16)	56.6% (6)
Milwaukee Brewers	40.7% (25)	57.9% (19)	52.6% (16)
Minnesota Twins	48.1% (15)	61.9% (10)	55.3% (12)
New York Mets	48.8% (12)	54.5% (22)	51.7% (19)
New York Yankees	49.4% (9)	60.6% (13)	55.2% (13)
Philadelphia Phillies	46.4% (18)	63.9% (6)	54.5% (14)
Pittsburgh Pirates	38.1% (29)	46.0% (30)	41.5% (30)
San Diego Padres	44.4% (21)	63.5% (8)	56.1% (9)
San Francisco Giants	48.7% (13)	52.4% (23)	50.6% (24)
Seattle Mariners	42.9% (23)	59.3% (17)	51.5% (21)
St. Louis Cardinals	47.0% (16)	63.6% (7)	55.9% (11)
Tampa Bay Rays	45.2% (19)	57.0% (21)	51.8% (18)
Texas Rangers	48.6% (14)	65.2% (5)	56.5% (7)
Toronto Blue Jays	46.8% (17)	48.5% (26)	47.6% (26)
Washington Nationals	43.3% (22)	47.8% (28)	45.9% (28)

Umpire ABS Challenge Leaders

Rank	UmpireName	Chal	ChalW	Chal%	P
1	Dillon Wilson	13	4	30.8%	1453
2	Derek Thomas	48	16	33.3%	3311
2	Dexter Kelley	36	12	33.3%	2451
2	Louie Krupa	33	11	33.3%	2028
5	David Rackley	57	23	40.4%	4691
6	Scott Barry	47	19	40.4%	4299
7	Emil Jimenez	49	20	40.8%	3823
8	Erich Bacchus	46	19	41.3%	4280
9	Alex Tosi	48	20	41.7%	4169
9	Edwin Jimenez	24	10	41.7%	2181
11	James Jean	55	23	41.8%	4685
12	Mark Ripperger	64	27	42.2%	4541
13	John Libka	42	18	42.9%	4057
14	Jonathan Parra	32	14	43.8%	2487
15	Nic Lentz	63	28	44.4%	4526
15	Austin Jones	45	20	44.4%	3062
17	Adam Beck	67	30	44.8%	4504
18	John Tumpane	58	26	44.8%	4299
19	Jansen Visconti	55	25	45.5%	4012
20	James Hoye	59	27	45.8%	4610
21	Chris Conroy	52	24	46.2%	3995
21	Shane Livensparger	52	24	46.2%	3721
21	Nate Tomlinson	52	24	46.2%	4690
24	Will Little	69	32	46.4%	4760
25	Quinn Wolcott	66	31	47.0%	4671
26	Jordan Baker	53	25	47.2%	4264
27	Dan Merzel	59	28	47.5%	4216
28	Tom Hanahan	63	30	47.6%	4511
29	Tripp Gibson	58	28	48.3%	4904
30	Ryan Additon	80	39	48.8%	4810
31	Tyler Jones	47	23	48.9%	2816
32	Adam Hamari	51	25	49.0%	4668
32	Carlos Torres	51	25	49.0%	4289
34	Nestor Ceja	61	30	49.2%	4504
35	Mark Wegner	62	31	50.0%	4802
35	Vic Carapazza	62	31	50.0%	5000
35	Nick Mahrley	42	21	50.0%	3334
38	D.J. Reyburn	59	30	50.8%	3947
39	Steven Jaschinski	33	17	51.5%	1989
40	Jeremie Rehak	61	32	52.5%	3856
40	Brennan Miller	61	32	52.5%	4504
42	Ryan Blakney	59	31	52.5%	4310
43	Alan Porter	57	30	52.6%	3868
44	Ryan Wills	55	29	52.7%	4021
45	Bruce Dreckman	66	35	53.0%	4680
45	Sean Barber	66	35	53.0%	4102
47	Junior Valentine	58	31	53.4%	4164
48	Brian O’Nora	41	22	53.7%	2830
49	Edwin Moscoso	59	32	54.2%	4072
50	Roberto Ortiz	53	29	54.7%	3606
51	Cory Blaser	51	28	54.9%	3656
51	Ben May	51	28	54.9%	4224
53	Chris Guccione	76	42	55.3%	4565
54	Chad Fairchild	61	34	55.7%	4104
55	Laz Diaz	77	43	55.8%	4785
56	Mike Muchlinski	59	33	55.9%	4655
57	Paul Clemons	50	28	56.0%	4284
58	Jen Pawol	46	26	56.5%	2653
59	Bill Miller	72	41	56.9%	4830
60	Malachi Moore	75	43	57.3%	4882
61	Doug Eddings	61	35	57.4%	4563
62	Gabe Morales	54	31	57.4%	3814
63	Marvin Hudson	40	23	57.5%	3347
64	Mike Estabrook	57	33	57.9%	4165
65	Charlie Ramos	55	32	58.2%	2882
66	Dan Bellino	67	39	58.2%	4578
67	Chad Whitson	60	35	58.3%	4281
68	Brock Ballou	41	24	58.5%	2878
69	Alex MacKay	58	34	58.6%	4029
70	Lance Barksdale	68	40	58.8%	4417
71	Rob Drake	64	38	59.4%	4526
72	Willie Traynor	52	31	59.6%	4705
73	Lance Barrett	77	46	59.7%	4653
74	Adrian Johnson	45	27	60.0%	2788
74	Clint Vondrak	50	30	60.0%	3966
76	Alfonso Márquez	51	31	60.8%	3885
76	Jacob Metz	51	31	60.8%	2914
78	Jim Wolf	54	33	61.1%	3479
79	Manny Gonzalez	73	45	61.6%	4362
80	Ramon De Jesus	63	39	61.9%	3497
81	Hunter Wendelstedt	79	49	62.0%	4158
82	Ron Kulpa	45	28	62.2%	2622
83	Felix Neon	27	17	63.0%	1186
84	Chris Segal	65	41	63.1%	4127
85	John Bacon	49	31	63.3%	2526
86	Dan Iassogna	75	48	64.0%	4499
87	Brian Walsh	64	41	64.1%	4110
88	Stu Scheurwater	71	46	64.8%	4478
89	Todd Tichenor	58	40	69.0%	4178
90	Andy Fletcher	40	29	72.5%	2790
91	CB Bucknor	9	7	77.8%	674