At this point in the season, Cincinnati Reds catcher Tyler Stephenson has the most overturns via the Automated Ball-Strike Challenge System. He has won 85 challenges via the ABS thus far.
According to Baseball Savant’s ABS leaderboard, Stephenson is 85-for-117 on challenges.
Since this is the inaugural season using ABS, it will be interesting to see which players prove most effective at challenging strike-zone calls throughout the year.
MLB Players With Most Successful ABS Overturns 2026
(Check out Baseball Savant for the full list)
| Player | Team | Successful Overturns |
|---|---|---|
| Tyler Stephenson | Reds | 85 |
| William Contreras | Brewers | 75 |
| Dillon Dingler | Tigers | 68 |
| Victor Caratini | Twins | 67 |
| Hunter Goodman | Rockies | 64 |
| Austin Wells | Yankees | 63 |
| Nick Fortes | Rays | 58 |
| Patrick Bailey | Guardians | 56 |
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