NEW YORK — The eyeblack was smudged and running down his cheeks, giving Brian McCann a menacing look as he stepped to the plate in the sixth inning.

It was the face of the new Yankees, of the cadre of sluggers general manager Brian Cashman had spent nearly $300 million on this winter to rebuild a roster short on power.

But those bats were largely silent through the season’s first 11 games, with McCann struggling maybe worst of all.

Then came Saturday afternoon.

McCann drilled the second of his two home runs in the sixth, part of the Yankees’ five-homer barrage in a 7-4 victory over the Boston Red Sox. It was a glimpse of what the catcher brings at the plate and behind it. And it was a glimpse of the potential a team loaded with power in a ballpark with a short right-field porch possesses.

“That’s what we’re capable of,” McCann said. “We have a deep lineup that gets on base. We’re capable of big innings.”

Four of the blasts came from newcomers: two by McCann and one each by Carlos Beltran (a two-run shot in the first) and Kelly Johnson (a solo shot in the eighth). Alfonso Soriano contributed a solo homer in the fourth, as all seven Yankee runs came by the long ball.

Notes

• Washington third baseman Ryan Zimmerman was lost for four to six weeks with a fractured right thumb. Zimmerman’s injury came after leadoff hitter Denard Span was placed on the seven-day disabled list with a concussion. Zimmerman had a double and a walk before he was hurt diving back to the bag when he was picked off second base in the fifth.

• St. Louis extended the contract of general manager John Mozeliak, 45, two years through the 2018 season.