Sean Monahan scored 2:26 into overtime, giving the Calgary Flames their first win of the season, 4-3 over the Buffalo Sabres on Tuesday night.

Monahan made a move and beat Robin Lehner over his shoulder for his first of the season after being set up alone in front by Johnny Gaudreau.

Matthew Tkachuk got his first NHL goal, and Michael Frolik and Micheal Ferland also scored for Calgary. It's the first win also for new coach Glen Gulutzan.

Zemgus Girgensons, Ryan O'Reilly and Marcus Foligno scored for Buffalo.

Lehner stopped 30 shots, and Chad Johnson had 18 saves for Calgary.