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Linesman Derek Nansen (70) levels Buffalo Sabres Corey Tropp during an altercation against the Toronto Maple Leafs during second period NHL pre-season action in Toronto on Sunday, Sept. 22, 2013

Linesman Derek Nansen (70) levels Buffalo Sabres Corey Tropp during an altercation against the Toronto Maple Leafs during second period NHL pre-season action in Toronto on Sunday, Sept. 22, 2013. (AP Photo/THE CANADIAN PRESS, Frank Gunn)