Watch: Tim Wharnsby on fighting, visors in NHL

CBC Sports senior hockey writer Tim Wharnsby debates fighting in hockey after Frazer McLaren's knocked out David Dziurzynski in a staged bout on Wednesday.

Senators' Dziurzynski suffers concussion after fight Wednesday

CBC's Tim Wharnsby, takes a look at violence in hockey, and the need for visors. 3:26 hockey writer Tim Wharnsby chats with CBC News about the debate on fighting in hockey after the knockout bout between Toronto Maple Leafs forward Frazer McLaren and Ottawa Senators forward David Dziurzynski.

Wharnsby also offers suggestions for the NHL on instituting mandatory visors for players to avoid career-threatening eye injuries.