MLB ABS Challenge Leaderboard 2026 — Final Team Win Rates
In the final 2026 regular season, the Texas Rangers won .633 of their 215 ABS challenges, best in MLB, and 56.1% of all 7,894 challenged ball-strike calls were overturned.
2026 was the first full season of the automated ball-strike challenge system. MLB teams challenged 7,894 ball-strike calls and won 4,429 of them. Challenged calls were wrong more often than they were right.
The Texas Rangers were the sharpest challengers in baseball at .633. The Baltimore Orioles were the worst at .481, one of two teams, with the Pirates, to lose more challenges than they won. Here is every team.
ABS Challenge Leaderboard — Final 2026 Regular Season
Ranked by challenge win rate. Record shown as overturned-upheld, with total challenges issued.
How the ABS Challenge System Works
Two challenges per team per game. A team that wins a challenge keeps it. Lose two and you are done challenging for the night.
Only the pitcher, catcher, or batter can call for one. Not the manager, not the dugout. The player has to signal immediately after the pitch.
Hawk-Eye tracking decides it. The system checks the pitch against the strike zone and the call stands or flips within seconds.
Extra innings reset the supply. A team entering extras without a challenge gets one per inning, though never more than one at a time unless it still had both.
That structure is why the leaderboard is a skill measure and not a volume measure. A challenge costs nothing if you are right, so the teams at the bottom are not unlucky — they are spending challenges on pitches that were called correctly.
Does Challenging More Often Make You Worse?
A little. Across all 30 teams the correlation between how often a team challenged and how often it won is -0.23— a real but weak pull. Teams that challenged a lot were slightly worse at it, and volume explains little of the spread.
The eight busiest teams (286 or more challenges) averaged .547. The six most selective (228 or fewer) averaged .567. That 20-point gap is smaller than the 81-point gap between the best and worst of the eight busiest teams.
Which means the leaderboard is not measuring restraint. It is measuring whose pitcher, catcher, and batter know the zone.
The Outliers
Texas does both well
The Rangers issued 215 challenges, second-fewest in baseball, and won 136 of them. Best rate in MLB on nearly the smallest sample. No other team is top five in both selectivity and accuracy.
The White Sox challenge everything
Chicago led baseball with 346 challenges and went 176-170 on them. That is 131 more challenges than Texas for 40 more overturns, at a .509 rate.
Volume is not automatically bad
The Yankees (299 challenges, .575) and Marlins (295, .590) were both top-five in volume and top-11 in accuracy, above the .561 league rate — the closest thing in the data to a genuine edge.
Two teams finished underwater
The Orioles went 117-126 and the Pirates 133-134, the only clubs to lose more ball-strike challenges than they won.
See Your Team’s Challenge Record
Every team page carries an ABS Challenges card: total challenges, the win-loss split, the rate, and the most recent challenges with the player who called for each one and whether it was overturned.
The Stats page carries the league board, sortable by total challenges or win rate, so you can rank all 30 the way you want them. For what every abbreviation on those pages means, the glossary has the full list.
Quick Answers
Which MLB team was best at ABS challenges in 2026?
The Texas Rangers, at a .633 win rate: 136 overturned calls on 215 challenges in the final 2026 regular season.
Which team challenged the most?
The Chicago White Sox, with 346 challenges, and a .509 win rate on them, 28th of 30.
How often were ball-strike challenges successful in 2026?
League-wide, 56.1% of challenges were overturned in the 2026 regular season: 4,429 of 7,894.
How many challenges does each team get?
Two per game, retained on a successful challenge. Teams entering extra innings without one receive an additional challenge per inning.
Who is allowed to challenge a call?
Only the pitcher, catcher, or batter, and only immediately after the pitch. Managers cannot initiate a challenge.
Numbers on this page are the final 2026 regular season, pulled from the same feed the app uses. The live board is always current.