Penguins' Sidney Crosby

Associated Press
FILE - In this Dec. 5, 2011, file photo, Pittsburgh Penguins' Sidney Crosby prepares to take a face off during an NHL hockey game against the Boston Bruins in Pittsburgh. Crosby, once the youthful face of the future of the NHL, is dealing with a recurrence of concussion-like symptoms.  (AP Photo/Gene J. Puskar, File)

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Pittsburgh Penguins' Sidney Crosby in action on the ice, who one year ago was out for the season due to a concussion.

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