NHL Western Conference Quarterfinals Game 4 Calgary Flames vs. Chicago Blackhawks

Chicago Blackhawks center Dave Bolland (R) tries to advance the puck as Vancouver Canucks defenseman Alexander Edler defends during the first period of game 4 of the 2009 NHL Western Conference Semifinals at the United Center in Chicago on May 7, 2009. (UPI Photo/Brian Kersey)