Boone continued the argument for about another minute while third base umpire Jordan Baker interceded and the at-bat continued with McMahon flying out to center field.
Boone was ejected six times last season. His last ejection was by Manny Gonzalez on July 23 in Toronto during the seventh inning for arguing a called third strike on Anthony Volpe.
Since becoming manager in 2018, Boone has been ejected 44 times. Last season, he was tossed by Thomas in the seventh inning of a game against the Atlanta Braves following a walk to Marcell Ozuna.
The Astros held a 2-0 lead when Boone was ejected.
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AP MLB: https://apnews.com/hub/MLB