Ovechkin's first tally came at the 1:42 mark of the first period on a Washington power play. That 1-0 score held until 3:52 of the second, when Nicklas Backstrom scored his 13th goal of the season off assists from Alexander Semin and Roman Hamrlik to make the score 2-0.
Buffalo finally answered with a goal from Jochen Hecht at the 15:02 mark of the second period, but Ovechkin's second goal of the game at 14:10 of the third period slammed the door on the Sabres and allowed Washington to cruise to victory.
The Caps improved to 19-15-2 on the season with the win. They'll travel to face the Columbus Blue Jackets at 7:00 p.m. on Saturday at Nationwide Arena.