Ottawa Senators' Erik Karlsson (65) battles Washington Capitals' Jason Chimera for the puck during the first period of an NHL hockey game at the Scotia Bank Place in Ottawa, Ontario, on Tuesday, Jan. 29, 2013. (AP Photo/The Canadian Press, Sean Kilpatrick)

Photo by: Sean Kilpatrick

Ottawa Senators' Erik Karlsson (65) battles Washington Capitals' Jason Chimera for the puck during the first period of an NHL hockey game at the Scotia Bank Place in Ottawa, Ontario, on Tuesday, Jan. 29, 2013. (AP Photo/The Canadian Press, Sean Kilpatrick)