"I made him quit," Leonard said. "To make a man quit, to make Roberto Durán quit, was better than knocking him out.
When Sugar Ray Leonard lost his welterweight title to Roberto Durán, in Montreal earlier that year, he blamed himself for getting into a street brawl because he didn’t like Duráns way.
After the Montreal fight Durán went on a partying binge and ballooned in weight. Leonard was aware of this, and in an interview for Beyond the Glory he said: “My intention was to fight Durán ASAP because I knew Duran’s habits. I knew he would indulge himself, he’d gain 40–50 lbs and then sweat it off to make 147.” Unlike the fight in Montreal, Leonard used his superior speed and movement to outbox and befuddle Durán . “The whole fight, I was moving, I was moving,” Leonard said. “And Voom! I snapped his head back with a jab. Voom! I snapped it back again. He tried to get me against the ropes, I’d pivot, spin off and Pow! Come under with a punch.”
In round seven, Leonard started to taunt Durán. Leonard’s most memorable punch came late in the round. Winding up his right hand, as if to throw a bolo punch, Leonard snapped out a left jab and caught Durán flush in the face. “It made his eyes water,” Leonard said. He continued to taunt Durán mercilessly. He stuck out his chin, inviting Durán to hit it. Durán hesitated. Leonard kept it up, continuing to move, stop, and mug.
In the closing seconds of the eighth round, Durán turned his back to Leonard and quit, saying to referee Octavio Meyran, “No Mas.” Leonard was the winner by a technical knockout at 2:44 of round eight, regaining the WBC Welterweight Championship. Leonard led by scores of 68–66, 68–66 and 67–66.