Mark Letestu scored and Marc-Andre Fleury turned aside 29-of-30 shots for the Penguins, who remained two points behind Eastern Conference-leading Philadelphia while improving to 5-6-4 in their last 15 games.
Pittsburgh ran its winning streak over the Sabres to six games.
Rob Niedermayer scored for Buffalo, which lost in regulation for the first time in eight games.
Ryan Miller turned aside 28-of-31 shots for the Sabres, which remained in possession of the eighth and final Eastern Conference playoff spot.
|Additional Sports News Stories|
SEATTLE, May 24 (UPI) --Actor Morgan Freeman says he had a very good reason for appearing to sleep during a morning television interview with a Fox affiliate in Seattle this week.
LEICESTER, England, May 24 (UPI) --King Richard III of England was buried in a hastily dug grave too small for his body with no coffin or shroud, archaeologists say in a paper published Friday.