Mikko Rantanen scored an empty-net goal at 19:25 for the 6-4 final.
"The last three games, especially, it has been special teams," Buffalo coach Don Granato said. "That has swung momentum. … We're turning pucks over that we could be turning into an opportunity on the offensive side."
NOTES: MacKinnon has five 5-point NHL games, tying Michel Goulet and Marian Stastny for fifth-most in Avalanche history. Peter Stastny is first with 12. ... Dahlin played his 300th NHL game. … Tuch tied Danny Gare (Dec. 17, 1978) for the third-fastest goal from the start of any period by a Sabres player. Alexander Mogilny has the fastest, scoring five seconds into the first period Dec. 21, 1991. … Tuch has 200 points (84 goals, 116 assists) in 328 NHL games with the Sabres, Minnesota Wild and Vegas Golden Knights.