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Rule sets / OBR / Double Set Balk

Double Set Balk

A pitcher may not come to a complete stop in the set position, restart his motion to come set and come to a second complete stop.

Official Baseball Rules Rule 6.02(a)(13) 2026 edition

If there is a runner, or runners, it is a balk when the pitcher delivers the pitch from Set Position without coming to a stop.

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MLB Umpire Development Manual Authoritative interpretation

Lastly, if the pitcher comes to a complete stop, starts his motion, then makes a second stop, he shall be charged with a balk. A pitcher is not allowed to set twice. This is referred to as a "double set."

MLB Umpire Development Manual p. 119 (2025)

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