It wasn’t just that the Red Sox swept the AL West-leading Astros, it was how they did it. Friday’s walk-off win in 10 innings was the closest game as the Red Sox outscored Houston 15-4 in the next two.

A six-run fourth inning helped the Boston Red Sox defeat the visiting Houston Astros 6-1 on Sunday to complete a three-game sweep.

Romy Gonzalez homered over the Green Monster on the first pitch faced by a Boston batter, Trevor Story added a two-run shot, and the Red Sox beat the Houston Astros 7-3 on Saturday. Abraham Toro added a two-run drive — one of three homers the Red Sox hit over Fenway Park’s fabled left-field wall ­— and Story added an RBI double as Boston won its third straight.