Aaron Doornekamp accidentally bumped into Italian Andrea Bargnani during a Canada vs Italy game, but the Italian got angry and decided to throw a bitch ass sucker punch when Doornekamp's back was turned.

The resulting melee was actually pretty mild. Canadian basketball players seem to be more passive than their Hockey playing compatriots.

http://thehoopdoctors.com/online2/2009/08/friendly-canada-vs-italy-game-turns-ugly/