His finances exhausted after three years of high living in retirement, former boxing champion Roberto Duran is training hard in Panama in a comeback attempt.

It won't be much at first -- a 10-round match against Colombian junior middleweight champion Manuel Esteban Zambrano at Panama City's Nuevo Panama Coliseum Jan. 31. But Alberto Aleman Jr., chairman of the World Boxing Association championship committee, said that if Duran wins, promoter Bob Arum would give him the chance to fight the winner of a bout between John Collins and Robbie Sims March 9 in Las Vegas.

Collins is ranked No. 5 among WBA middleweights and Sims No. 7.

At 34, Duran said he is down to 175 pounds from the 200 pounds he weighed a couple of months ago, but has another 15 pounds or so to lose.

Friends and family members say Duran's huge fortune, amassed when he became lightweight, then welterweight and finally junior middleweight champion of the world is almost exhausted by unbridled spending.

Thomas Hearns sent Duran into retirement June 15, 1984 in Las Vegas with a brutal second-round knockout . . .

In Bangkok, World Boxing Council super bantamweight champion Lupe Pintor of Mexico lost his crown for failing to meet the 122-pound limit, but went on with the scheduled fight against Thai challenger Samart Payakarun, who knocked out Pintor in the fifth round to claim the title.