Astros awaken for 7 in 9th, beat Boston 9-2 to tie ALCS 2-2

  • Houston Astros' Carlos Correa hits double against the Boston Red Sox during the ninth inning in Game 4 of baseball's American League Championship Series Tuesday, Oct. 19, 2021, in Boston. (AP Photo/David J. Phillip)

  • Houston Astros third baseman Alex Bregman, left, first baseman Yuli Gurriel hug after their win against the Boston Red Sox in Game 4 of baseball's American League Championship Series Wednesday, Oct. 20, 2021, in Boston. (AP Photo/Robert F. Bukaty)

  • Houston Astros' Jose Altuve and Jason Castro celebrates after scoring against the Boston Red Sox during the ninth inning in Game 4 of baseball's American League Championship Series Tuesday, Oct. 19, 2021, in Boston. (AP Photo/Charles Krupa)

  • Houston Astros second baseman Jose Altuve celebrates with teammates after their win against the Boston Red Sox in Game 4 of baseball's American League Championship Series Wednesday, Oct. 20, 2021, in Boston. (AP Photo/Charles Krupa)

  • Houston Astros second baseman Jose Altuve and shortstop Carlos Correa celebrate after their win against the Boston Red Sox in Game 4 of baseball's American League Championship Series Wednesday, Oct. 20, 2021, in Boston. (AP Photo/David J. Phillip)

  • Houston Astros second baseman Jose Altuve and shortstop Carlos Correa celebrate after their win against the Boston Red Sox in Game 4 of baseball's American League Championship Series Wednesday, Oct. 20, 2021, in Boston. (AP Photo/Winslow Townson)

BOSTON — Six outs from falling behind 3-1 in the AL Championship Series and facing elimination in Game 5 in Boston — where the Red Sox had yet to lose this postseason — the Houston Astros offense awakened.