Connor Wong hit a tiebreaking double in the seventh inning, and the Boston Red Sox rallied from a three-run deficit to beat the Chicago Cubs 4-3 in a doubleheader opener on Friday that clinched the No. 5 seed in the American League playoffs. Boston will plays its Wild Card Series for the second year in a row at the New York Yankees, who won last season's best-of-three matchup 2-1.