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Tuesday, November 10, 2026Nov 10

Robot umpires to make All-Star Game debut, another step toward possible regular-season use in 2026

FILE - The Automated Ball-Strike System plays on the scoreboard after a pitch call was challenged during the first inning of a spring training baseball game between the Chicago White Sox and the San Diego Padres, Feb. 26, 2025, in Phoenix. (AP Photo/Carolyn Kaster, File)
FILE - The Automated Ball-Strike System plays on the scoreboard after a pitch call was challenged during the first inning of a spring training baseball game between the Chicago White Sox and the San Diego Padres, Feb. 26, 2025, in Phoenix. (AP Photo/Carolyn Kaster, File) FILE - The Automated Ball-Strike System plays on the scoreboard after a pitch call was challenged during the first inning of a spring training baseball game between the Chicago White Sox and the San Diego Padres, Feb. 26, 2025, in Phoenix. (AP Photo/Carolyn Kaster, File)

ATLANTA (AP) — Tarik Skubal views the strike zone differently than robot umpires.

“I have this thing where I think everything is a strike until the umpire calls it a ball,” Detroit’s AL Cy Young Award winner said ahead of his start for the American League in Tuesday night’s All-Star Game.

MLB has been experimenting with the automated ball-strike system in the minor leagues since 2019 and will use it in an All-Star Game for the first time this summer. Each team gets two challenges and retains the challenge if it is successful.

“Pitchers think everything is a strike. Then you go back and look at it, and it’s two, three balls off,” Pittsburgh’s Paul Skenes, starting his second straight All-Star Game for the National League, said Monday. “We should not be the ones that are challenging it.”

MLB sets the top of the automated strike zone at 53.5% of a batter’s height and the bottom at 27%, basing the decision on the midpoint of the plate, 8 1/2 inches from the front and 8 1/2 inches from the back. That contrasts with the rule book zone called by umpires, which says the zone is a cube.