NEW YORK (AP) Astros manager AJ Hinch blew his own whistle Thursday on sign stealing and pitch tipping: He's had enough of allegations about Houston hitters going out of bounds to decipher what's coming at the plate.

Hinch eagerly weighed in again on an issue that won't seem to go away this postseason. He was asked before Game 4 of the AL Championship Series about reports that indicated the New York Yankees suspected the Astros of whistling from their dugout during the opener to communicate pitch selection to their batters.

Major League Baseball looked into it and concluded Houston didn't break any rules, a person familiar with the matter confirmed to The Associated Press. The person spoke on condition of anonymity because they were not authorized to discuss it publicly.