Washington Capitals center Mathieu Perreault (85), pleads his case to referee Greg Kimmerly (18) with Carolina Hurricanes center Jordan Staal (11) and left wing Jussi Jokinen (36), from Finland, nearby, in the second period of an NHL hockey game Tuesday, March 12, 2013 in Washington. (AP Photo/Alex Brandon)

Photo by: Alex Brandon

Washington Capitals center Mathieu Perreault (85), pleads his case to referee Greg Kimmerly (18) with Carolina Hurricanes center Jordan Staal (11) and left wing Jussi Jokinen (36), from Finland, nearby, in the second period of an NHL hockey game Tuesday, March 12, 2013 in Washington. (AP Photo/Alex Brandon)