After 2 1/2 scoreless periods, the Sabres finally went on top midway through the third period on a goal by Matt Moulson, but Paul Byron tied it for Calgary less than 3 minutes later.
Then in overtime, Stajan bested Jhonas Enroth with a shot from the left circle, handing the Flames their first victory in Buffalo in more than 17 years -- a span of nine games.
Enroth turned aside 24 shots for the Sabres.
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