Arron Asham, left, of the Penguins lands a punch to the face of Washington's Jay Beagle (83) during a third-period fight Thursday night at the Consol Energy Center. The Capitals won the game in overtime, 3-2.

PITTSBURGH — Alexander Ovechkin and the Washington Capitals still own the Pittsburgh Penguins.

In the regular season, at least.

Dennis Wideman’s power-play goal 2:48 into overtime lifted the Capitals to a 3-2 victory Thursday night, extending their regular-season mastery over a postseason nemesis.

Washington is 12-1-2 in its last 15 regular-season meetings with Pittsburgh, including eight straight wins on the road.

“We got a little lucky, I think,” said Washington’s Nicklas Backstrom, who fed Wideman for the game-winner. “That’s hockey sometimes. It’s not always fair.”

The Penguins drew some blood, though. Penguins forward Arron Asham took down Washington’s Jay Beagle in a fight, then apologized for rubbing it in afterward.

He dropped Beagle with two punches in the third period, then spread his arms out like a boxing referee stopping a fight, as he skated to the penalty box with Beagle in a heap on the ice.

Asham followed it up by placing his hands on the side of his head to imitate someone sleeping.

Beagle’s face was bloodied and he had to be helped off the ice.

Pittsburgh has knocked Washington out of the Stanley Cup playoffs seven times in eight chances, though the Capitals have dominated the regular-season meetings over the last three years.

Ovechkin scored his first goal of the season and goalie Tomas Vokoun bounced back from a shaky debut with the Capitals to finish with 39 saves as Washington remained unbeaten (3-0-0).

“It’s a real tough building here, and (Vokoun) was the difference for us,” Mike Knuble said. “Even the first period, we finished down 1-0; it could have been three or four after the first. And then he made some big saves in the third, too, when they started to really gain some momentum and push back against us. He was a big factor tonight.”

James Neal scored twice and Evgeni Malkin had two assists for the Penguins, who took their first non-shootout loss of the season.

Sidney Crosby’s return remains uncertain, though the Penguins have been just fine without their superstar during the season’s first week, getting off to the franchise’s best start in 17 years.

They received a boost on Thursday from Malkin, who sat out the previous two games while dealing with soreness in his surgically repaired right knee.

His presence seemed to energize the Penguins, who dominated the game for long stretches and outshot the Capitals 41-19.