PITTSBURGH (AP) ― The reigning NHL MVP is out indefinitely with an upper-body injury. The league’s top-scoring defenseman is out, too, apparently because of a lower-body issue.

Still, it hardly matters for the streaking Pittsburgh Penguins.

Sidney Crosby scored his 13th goal, Joe Vitale added his first in more than a year, and Tomas Vokoun stopped 31 shots as the Penguins beat the Boston Bruins 2-1 on Sunday for their ninth straight win.

“It seems like it’s always different guys, so that’s what you need in order to have success consistently. We’ve been getting that lately,” Crosby said. “Our depth is a big part of our success. We need to continue to show that.”

The Penguins moved into the top spot in the Eastern Conference even without star center Evgeni Malkin ― who missed his fifth consecutive game ― and played the final two periods without defenseman Kris Letang, who didn’t return after the first intermission following a seemingly innocuous collision with Boston’s Brad Marchand.

Ottawa 4, Winnipeg 1

Washington 5, Buffalo 3

Edmonton 3, Nashville 2