Quote from dgabriel:
THis is true.
My favorite street fight story with fighting pros is when Mike Tyson ran into 6'5" Mitch Green a few days after Tyson dispatched of him in the ring. THey bumped into each other at a clothes store in Harlem one night - a 24 hour haberdashery. A place that sells $10,000 lizard skin jackets to gangstas.
Anyway, they bump into each other and Green starts talking trash to Tyson, but Mike doesn't hesitate. He unloads a right to Greens face, breaking his hand (and Greens face) in the process. The newspapers went crazy over this incident and in the following days ran numerous photos showing Tyson with his hand in a cast and Green with his eye swollen shut, in even worse shape than after his ring bout with Tyson. Green claims he was suckerpunched.
Some of the boxers hit incredibly hard. Look at Foreman in the 1970s, he was scrambling people brains and cracking their ribs.
Legend: Roberto Duran was discovered when he was 16. He was tossed out of a whorehouse for "insufficient funds". A man in a "White suit" came out and told Duran if he could knock the donkey down that was in the empty lot across the street, he would pay for Duran's time in the brothel. Duran went up and not only floored the donkey but knocked the poor animal out with one punch. The man in the white suit paid for his session, and later brought him to a local trainer and that's how Duran got into boxing. Probably apocryphal but an entertaining story.