Washington Capitals center Nicklas Backstrom (19) falls to the ice after he was tripped by New York Rangers defenseman Anton Stralman, of Sweden, in the first period of their NHL hockey game at Madison Square Garden in New York, Sunday, Feb. 17, 2013. Stralman was penalized for tripping. (AP Photo/Kathy Willens)

Photo by: Kathy Willens

Washington Capitals center Nicklas Backstrom (19) falls to the ice after he was tripped by New York Rangers defenseman Anton Stralman, of Sweden, in the first period of their NHL hockey game at Madison Square Garden in New York, Sunday, Feb. 17, 2013. Stralman was penalized for tripping. (AP Photo/Kathy Willens)