NEW YORK — Mike Napoli hit a grand slam right after a mound conference, Felix Doubront stifled the Yankees once again and the Boston Red Sox sent New York to its sixth loss in seven games, 11-1 Saturday night.

Daniel Nava added a three-run homer in the eighth inning that emptied the crowd. The aisles were full of fans streaming to the exits by the time Nava touched the plate, and a “Let’s go, Red Sox” chant erupted when Stephen Drew homered in a three-run ninth.

The Red Sox stopped Phil Hughes’ recent run of success against them and evened this three-game series going into Sunday night’s wrapup. Boston won on a warm evening, with Yankees catcher Chris Stewart leaving after the fourth inning because of dehydration.