PITTSBURGH, April 23 (UPI) -- Steve Ott's third-period goal provided the difference Tuesday and the Buffalo Sabes snapped Pittsburgh's seven-game winning streak, 4-2.
Thomas Vanek tallied twice and added an assist as the Sabres won for the first time in three games.
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Jochen Hecht added a goal and Ryan Miller turned aside 40 shots to earn the victory.
Chris Kunitz and Jarome Iginla found the net for the Penguins, who have clinched the top seed in the Eastern Conference.
Marc-Andre Fleury made 26 saves for Pittsburgh.