Penguins' Sidney Crosby

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

Sidney Crosby

In this Jan. 1, 2011, photo, Pittsburgh Penguins' Sidney Crosby, right, crawls on the ice after being injured in the second period of the NHL Winter Classic outdoor hockey game in Pittsburgh. Washington Capitals goalie Semyon Varlamovis at left. Crosby will make his season debut on Monday, Nov. 21, against the New York Islanders, his first game in nearly a year since being sidelined with concussion-like symptoms. Crosby hasn't played since taking a head shot here and in the next game in January against Tampa Bay. (AP Photo/Keith Srakocic)

Sidney Crosby

PITTSBURGH, PA - JANUARY 01: Sidney Crosby #87 of the Pittsburgh Penguins in action against the Washington Capitals during the 2011 NHL Bridgestone Winter Classic at Heinz Field on January 1, 2011 in Pittsburgh, Pennsylvania. (Photo by Brian Babineau/NHLI via Getty Images)

St. Louis Blues v Pittsburgh Penguins

PITTSBURGH, PA - NOVEMBER 23: A Pittsburgh Penguin fan shows his appreciation for Sidney Crosby #87 of the Pittsburgh Penguins returning to the lineup during a game against the St. Louis Blues on November 23, 2011 at CONSOL Energy Center in Pittsburgh, Pennsylvania. St. Louis defeated Pittsburgh 2-1 in overtime. (Photo by Jamie Sabau/Getty Images)

Pittsburgh Penguins v Montreal Canadiens

MONTREAL, CANADA - NOVEMBER 26: Sidney Crosby #87 of the Pittsburgh Penguins chases the puck while being defended by Hal Gill #75 of the Montreal Canadiens during the NHL game at the Bell Centre on November 26, 2011 in Montreal, Quebec, Canada. (Photo by Richard Wolowicz/Getty Images)