San Jose Sharks' Matthew Irwin, right, collides with Calgary Flames' Tim Jackman during the first period of an NHL hockey game, Sunday, Jan. 20, 2013, in Calgary, Alberta. (AP Photo/The Canadian ... more 

San Jose Sharks' Matthew Irwin, right, collides with Calgary Flames' Tim Jackman during the first period of an NHL hockey game, Sunday, Jan. 20, 2013, in Calgary, Alberta. (AP Photo/The Canadian Press, Jeff McIntosh) less