Ottawa Senators v Toronto Maple Leafs

Karlsson, who could draw some Norris buzz this season, shows us how to properly stretch a hamstring.

TORONTO, CANADA – JANUARY 17: of the Ottawa Senators skates in the warm-up prior to a game against the Toronto Maple Leafs on January 17, 2012 at the Air Canada Centre in Toronto, Canada. (Photo by Claus Andersen/Getty Images)