Nashville Predators goalie Pekka Rinne, of Finland, makes a stop against the Pittsburgh Penguins in the first period of an NHL hockey game Tuesday, March 4, 2014, in Nashville, Tenn. (AP Photo/Mark Humphrey)
A members of the ice crew removes accumulative snow from the ice during the first period of an NHL Stadium Series hockey game between the Chicago Blackhawks and the Pittsburgh Penguins at Soldier Field on Saturday, March 1, 2014, in Chicago. (AP Photo/Charles Rex Arbogast)
Hockey fans watch the Chicago Blackhawks face the Pittsburgh Penguins as snow falls during the first period of an NHL Stadium Series hockey game at Soldier Field on Saturday, March 1, 2014, in Chicago. (AP Photo/Charles Rex Arbogast)
Hockey fans watch the Chicago Blackhawks face the Pittsburgh Penguins as snow falls during the first period of an NHL Stadium Series hockey game at Soldier Field on Saturday, March 1, 2014, in Chicago. (AP Photo/Charles Rex Arbogast)
A young hockey fan watches the Chicago Blackhawks face the Pittsburgh Penguins as snow falls during the first period of an NHL Stadium Series hockey game at Soldier Field on Saturday, March 1, 2014, in Chicago. (AP Photo/Charles Rex Arbogast)
Hockey fans watch the Chicago Blackhawks face the Pittsburgh Penguins as snow falls during the first period of an NHL Stadium Series hockey game at Soldier Field on Saturday, March 1, 2014, in Chicago. (AP Photo/Charles Rex Arbogast)
Pittsburgh Penguins left wing James Neal (18) and Chicago Blackhawks defenseman Michal Rozsival (32) look for the puck in the corner during the first period of an NHL Stadium Series hockey game at Soldier Field on Saturday, March 1, 2014, in Chicago. (AP Photo/Charles Rex Arbogast)
Chicago Blackhawks center Jonathan Toews is hit in the face by a high stick from Pittsburgh Penguins left wing Chris Kunitz (14), next to Michal Rozsival (32) during the first period of an NHL Stadium Series hockey game at Soldier Field on Saturday, March 1, 2014, in Chicago. (AP Photo/Charles Rex Arbogast)
Chicago Blackhawks coach Joel Quenneville watches his team skate again the Pittsburgh Penguins during the first period of an NHL Stadium Series hockey game at Soldier Field on Saturday, March 1, 2014, in Chicago. (AP Photo/Charles Rex Arbogast)