The Boston Bruins improved to 3-0-0 to start the season for just the fourth time in the past 20 years, defeating the visiting Buffalo Sabres 3-1 on Saturday night.

Mark Kastelic led the Bruins with the game-winning goal and an assist. Boston never trailed, taking a 2-0 lead on Kastelic's second-period tally while Pavel Zacha and Sean Kuraly bookended the home team's scoring.

Jeremy Swayman made 21 saves in the victory, with 13 coming in the second period.

Jason Zucker netted the lone goal and Alex Lyon stopped 28 shots for Buffalo, which has dropped its first two games of the season.

Boston finished with a 31-22 shots on goal advantage, including a dominant 17-2 in the first period.

Boston's start included a 6-1 edge in shots even before earning its first of two power plays halfway th

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