Patrice Bergeron

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Boston Bruins center Patrice Bergeron (37) congratulates Boston Bruins goalie Tuukka Rask (40), of Finland, on his shutout after the Bruins beat the Chicago Blackhawks 2-0 in Game 3 of the NHL hockey Stanley Cup Finals in Boston, Monday, June 17, 2013. (AP Photo/Charles Krupa)

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Boston Bruins center Patrice Bergeron (37) and teammate Nathan Horton, rear, celebrate after beating the Toronto Maple Leafs during overtime in Game 7 of their NHL hockey Stanley Cup playoff series in Boston, Monday, May 13, 2013. Bergeron scored the game-winning goal as the Bruins won 5-4. (AP Photo/Charles Krupa)

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Boston Bruins center Patrice Bergeron (37) is congratulated by teammates after his goal in the final minute of the third period, which tied the game 4-4 forcing overtime against the Toronto Maple Leafs, in Game 7 of their NHL hockey Stanley Cup playoff series in Boston, Monday, May 13, 2013. (AP Photo/Charles Krupa)

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Patrice Bergeron won the Selke Trophy as the NHL's best defensive forward. (Associated Press)

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Washington Capitals defenseman Dennis Wideman (6) (left) goes down while battling for the puck against Boston Bruins center Patrice Bergeron (37) in the second period as the Caps took on the Bruins in game four of the National Hockey League's first-round playoffs at the Verizon Center in Washington on Thursday, April 19, 2012. (Andrew Harnik/The Washington Times)

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Boston Bruins goalie Tim Thomas and Patrice Bergeron fight for position against Washington Capitals center Nicklas Backstrom during the first period of Game 3 of the first-round playoff series Monday, April 16, 2012, in Washington. (AP Photo/Nick Wass)

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Patrice Bergeron was one of six Bruins to score at least 20 goals this season. He also posted an NHL-best plus-36 rating. (Associated Press)

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Boston Bruins' Patrice Bergeron (37), Tyler Seguin (19) and Brad Marchand (63) figure to be just a few of the forwards who could give the Washington Capitals fits in their first-round series that begins Thursday, April 12, 2011. (AP Photo/Paul J. Bereswill)

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ASSOCIATED PRESS The NHL determined it could not prove whether Vancouver's Alex Burrows (left) bit the finger of Boston's Patrice Bergeron during Wednesday's Game 1.