BOSTON (AP) - Jose Altuve hit his first grand slam after Boston shortstop Xander Bogaerts made a mental gaffe on a play that would have ended an inning Sunday, carrying the Houston Astros to an 8-1 victory over the Red Sox.
Altuve, who leads the majors in hits, went 4 for 5, raising his hit total to 173 and majors' best average to .339 as the Astros completed a split of the four-game series.
Dexter Fowler and Jon Singleton added solo homers for Houston, which earned its 52nd win to surpass last year's total.
Daniel Nava had an RBI double for Boston.
Collin McHugh (6-9) gave up one run on seven hits in six innings for Boston.
Joe Kelly (0-1) was tagged for seven runs on seven hits, walking six over four innings.