On September 26, 2018, the Astros' second consecutive AL West division championship was clinched with a victory by the Seattle Mariners over the Oakland A's. For the third time in franchise history, and second consecutive season, the team won over 100 games; they finished the regular season 103–59 (a new franchise record) by sweeping a double-header against the Baltimore Orioles on September 29, 2018. The Astros swept the Cleveland Indians in the ALDS to advance to the ALCS to face the league-leading Boston Red Sox (who finished the season 108–54.) After a 7–2 victory in Game 1 of the ALCS, the Astros dropped the next four games, and Boston advanced to the World Series.