Adding to the good news, Pavelski, Logan Couture and Patrick Marleau hit the scoreboard for the first time in the series. Pavelski and Couture each had two goals.
Defenseman Brent Burns, who led NHL defensemen with 76 points during the regular season but had been held without a point in the first three games, had three assists and led the Sharks with five shots on goal.
Veteran center Joe Thornton, playing his second game of the series after missing the first two because of a left-knee injury, also contributed with an assist, his first point of the series, and looked sharper than he did in Game 3.
"We were just ready," Pavelski said. "Everyone was ready. We've been there. The games have been tight, not much either way. We just got inside and made a few plays, and the power play responded with a little momentum, for sure ...
"There weren't really any lapses in our game."
The big rise in Couture's performance was expected, DeBoer said.
"I think I said in Game 1 or 2, he's got a lot of courage for what he's gone through the last two or three weeks, and every time out there and every day that passes, he's getting better and looks like his old self again," DeBoer said.