Tempers flare in Ottawa after Flames forward breaks unwritten hockey rule

Tempers flared when Andrew Mangiapane broke an unwritten hockey rule. After a whistle for offside, the Flames forward one-timed the puck into the Ottawa net, and Tomas Chabot took immediate exception.

Of course, nobody was harmed or hurt by the play, but hockey has one thing, it's major respect between players. Shooting the puck towards the net after the whistle has always been an unwritten rule in hockey.