Cozens completed the hat trick at 11:52 of the third for the 7-4 final.
"It looked like he was in sync and feeling good about his game," Sabres coach Don Granato said. "Obviously, incredible pace. … He definitely had his feet moving today. You could tell he felt good and speed, the impact he had, a lot of it was speed. He could've had one or two more as well."
NOTES:Ovechkin's goal was his 40th goal against the Sabres, the ninth team against which he has reached the mark, passing Marcel Dionne for second-most in NHL history behind Phil Esposito (10). … Cozens' first goal was his 100th NHL point. He's the third player from the 2019 NHL Draft to reach the milestone (Jack Hughes, Trevor Zegras). … Thompson (25 years, 119 days) is the youngest Sabres player to score 40 goals in a season since Thomas Vanek in 2008-09 (25 years, 82 days). … Thompson (five goals, five assists) and Skinner (five goals, four assists) each extended his point streak to six games. ... The Sabres scored seven goals in a game for the fifth time this season.