OTTAWA (AP) -- Alexander Ovechkin found a constructive way to dull the pain of a freshly healing wound.
The Russian star, who needed stitches to close a leg cut in Thursday's 4-3 overtime loss in Pittsburgh, scored a power-play goal 4:45 in to put Washington up 2-0. He added his second of the game early in the second before completing his first hat trick of the season in the third.
"Oh yeah, it was bothering me," Ovechkin said. "It was a little bit of pain but it's OK, I feel pretty good tonight. My parents were here, they arrived from Moscow and I was excited. It was a great time."
Ovechkin got his 30th goal of the season for his first career four-goal game on an empty net with 27.6 seconds remaining after he hit the outside of the net with a long shot moments earlier.
"What impresses me most is that he actually played tonight," Capitals goalie Olaf Kolzig said. "If you guys would have seen the gash on his leg and I know a lot of guys were, not begging him but leaning towards, 'Hey, you think you can play tonight?' He had a lot of courage and he put on a heck of a show."
Capitals coach Bruce Boudreau joked that Ovechkin might have earned himself a day off Sunday.
"I was looking for his skate to cut his other thigh, if that's what he's going to do every game," Boudreau said.
"It's frustrating to lose that one when we were kind of close and it was not a great game for us," Fisher said. "That would have been sweet to be able to come back but overall we've got to be better. We can't put ourselves in that position."
The Capitals, who won 4-1 in Ottawa on Nov. 8, have recorded standings points in five of their last six games despite only two wins.
Senators goalie Martin Gerber stopped 22 of 30 shots. Washington's Olaf Kolzig made 16 saves on 22 shots.
"It was definitely a ratings booster for the TV stations and I'm sure the fans got their money's worth, but I'm too old for these kind of games," Kolzig said. "It's going to force me to retire sooner than I want."
Backstrom scored his seventh goal with 2.6 seconds remaining in the second to put the Capitals up 5-2.
Fisher scored a short-handed goal in the third to draw the Senators within 5-4 after Spezza scored earlier in the period to cut Washington's lead to two.
Nylander got his second of the game at 9:13 to make it 6-4, but Fisher's power-play goal at 12:36 cut the margin again to one.
Alfredsson scored his second goal of the game -- his team-leading 24th -- on a penalty shot midway through the second while the Senators were short-handed. He also scored a power-play goal in the first.
Ovechkin has three career hat tricks. His last was in a 3-2 win in Atlanta on Dec. 15, 2006. ... It was Fisher's first career hat trick.