Baseball's Great Height Correction

Thu, 09 Apr 2026 22:47:29 -0700

For the 2026 season, Major League Baseball introduced its challenge system to great fanfare, with the Automated Balls/Strikes (ABS) system serving as a backstop to overturn (or validate) calls made by the umpires.

In doing so, MLB finally formalized the definition of the strike zone - no longer would it be “knees to letters” at the discretion of umpires - now it ranges from 27% to 53.5% of the batter’s measured height.

Batter on Conor McLaughlin

Baseball's Great Height Correction