Collin Graf and Pavol Regenda each had a goal and an assist, and Alex Nedeljkovic made 21 saves for the Sharks (24-19-3), who have won four of five.
Dylan Strome and Ryan Leonard each scored, Alex Ovechkin had an assist, and Logan Thompson made 23 saves for the Capitals (23-18-6), who defeated the Montreal Canadiens 3-2 in overtime on Tuesday and were looking to win consecutive games for the first time since a six-game streak Nov. 24-Dec. 3.
Strome gave the Capitals a 1-0 lead at 10:58 of the second period. Ovechkin’s shot from the left circle caromed off the back wall to Strome, who backhanded it in from the right post during a power play.
Zack Ostapchuk tied the score 1-1 at 13:27. Dmitry Orlov and Capitals defenseman Jakob Chychrun converged on a loose puck at the end boards behind the net and it bounced out to Ostapchuk, who scored from the slot with a snap shot.
Graf gave the Sharks a 2-1 lead at 14:53, going to the net and tipping in a pass from Regenda, who was coming down the left side after stealing the puck from Strome.
Regenda made it 3-1 at 16:13 when Macklin Celebrini won a puck battle behind the net and fed it in front to Regenda for the snap shot near the right post.
Leonard pulled the Capitals within 3-2 at 9:11 of the third period when he deked around Sharks forward Ryan Reaves at the top of the zone, skated down the slot and beat Nedeljkovic with a high shot on the glove side.
