Ovechkin, who missed time with a shoulder injury, scored during a pair of Washington power plays in the second period, when the Capitals struck for five goals overall.
The Washington star also notched an assist while Marcus Johansson and Tom Wilson each contributed a goal and an assist as the Caps reeled off a third straight win.
Braden Holtby stopped 34-of-36 shots for Washington.
Evgeni Nabakov yielded all six Caps goals on 39 shots.
Ray Liotta sues skin care company over use of likeness
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