Dela Hoya vs Buchanan

Buchanan had a dented foul proof cup and subsequently a corrective operation on a testicle.as a result of that "light punch."

• The two fighters fought after the bell ending round 13, and Duran caught Buchanan with a low blow. Buchanan collapsed to the canvas and grabbed his groin. He was able to get up but had to be helped to his corner. The referee took a look at Buchanan and stopped the fight. Buchanan said, "They helped me to my corner and then the referee said I couldn't come out. I told him I could keep boxing, but he said, 'You're not coming out.'"
• United Press International reported: "Ken Buchanan looked like he had been mugged in a back-alley. His left eye was cut and partially closed. There was a slit under his left eye and his groin was throbbing with pain."
• Doctor A. Harry Kleiman of the New York State Athletic Commission examined Buchanan after the fight and said, "He has a swelling of the right testicle. He’s in extreme pain." Years later, Buchanan said the low blow "dented my protector and metal burst into my right ball. I was peeing blood for days."
• Duran dismissed Buchanan's claim of a low blow, saying, "A lot of boxers try to make you think they were hit low because they are losing. I won it legally."
• After the fight, referee LoBianco said, "The bell rang, and they didn't hear it. Duran landed a hard blow to the solar plexus area. It was a fair blow." Sports Illustrated reported: "Later in the week, slow-motion replays of the television film seemed to convince LoBianco that the Scot was hit below the belt."

To say Buchanan quit is ignorance of the highest order.

Buchanan beat Laguna for the title in1970,Laguna had 3 times successfully defended his title that year.