Things have changed since the Yankees and Red Sox last met in mid-June, a three-game sweep by Boston that changed the trajectory of both teams’ summers: a revival for Boston and a plummet by the Yankees.

But the Yankees have surged recently and the Red Sox have stumbled, setting the stage for a gargantuan four-game series with postseason implications.

In Thursday night’s opener in front of a sellout crowd of 47,036 at the Stadium, the Red Sox — despite going only 3-for-19 with runners in scoring position and leaving 14 on base — continued to dominate the season series with a 6-3 win.

The Yankees (69-58) held a 3-2 lead through five innings, but Camilo Doval surrendered the tying run in the sixth. Luke Weaver allowed the go-ahead run in the seventh. Roman Anthony hit a two-run homer in

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