Prior to the Knicks-Nuggets brawl at the Madison Square Garden in 2006, at which venue did the most heavily penalized on-court fight occur? 
Knicks–Nuggets brawl: The Knicks–Nuggets brawl was an on-court altercation at a National Basketball Association (NBA) game between the New York Knicks and Denver Nuggets at Madison Square Garden in New York City on December 16, 2006.
i don't know