Jack Johnson and Brandon Saad each had two goals, Ryan Johansen scored in the third round of the shootout and the last-place Columbus Blue Jackets beat the Capitals 5-4 to give Eastern Conference-leading Washington its first losing streak this season.
Columbus goalie Anton Forsberg relieved injured Curtis McElhinney 55 seconds into overtime and picked up his first career win after making six saves before the shootout.
Columbus beat NHL-leading Dallas 6-3 on Tuesday night.
Johansen slowed at the hash marks and flipped a shot over Braden Holtby's glove. Brandon Dubinsky also scored in the shootout and Forsberg made stops on Evgeny Kuznetsov and Nicklas Backstrom.
Holtby allowed more than three goals for only the second time this season. T.J. Oshie and Jason Chimera had power-play goals for Washington, and Marcus Johansson and Kuznetsov also scored.
Saad tied it with 1:08 left after Kuznetsov's go-ahead tally early in the third.