Sugar Ray Leonard, in London to provide TV commentary for Tim Witherspoon's successful defense of his World Boxing Association heavyweight title against Britain's Frank Bruno, told reporters: "My eyes are fine -- I've got 20-20 vision and I want a comeback."

He reiterated he wants to fight middleweight champion Marvin Hagler. A 40,000-plus crowd gave him a tumultuous reception when he was introduced in the ring before the fight.

But Witherspoon had problems. Drunken fans threw chairs and coins at him after he won. A policeman was knocked unconscious and another 24 were hurt slightly . . .

In Stateline, Nev., former Olympic champion Paul Gonzales of Los Angeles survived a third-round knockdown to win a convincing 12-round decision over Orlando Canizales of Laredo, Tex., and retain his NABF flyweight title.

Gonzales weighed 111 1/2 pounds, one-half pound less than Canizales. He won 11 of 12 rounds with a persistent left jab and consistent combinations. A crowd of 3,000 watched the outdoor fight at Caesars Tahoe resort.

Gonzales, 22, was making his first defense of the title that he won from Alonzo Strongbow in February. Gonzales, named the outstanding boxer in the 1984 Olympics, is 5-0 as a pro.