Former world championship boxing contender Tony Ayala Jr. (22-0 with 19 knockouts), who is serving a 30-year prison term in New Jersey, may be allowed to resume his ring career, according to a published report.

Ayala has been imprisoned since April 1983 when he was convicted of sexual assault. At one time, the San Antonio native was ranked No. 1 among middleweights, but his incarceration at Trenton State Prison barred him from continuing boxing.

The San Antonio Express-News, quoting unidentified sources, said Ayala was moved last Tuesday to Rahway State Prison, where several pro fighters have had successful boxing careers while behind bars.

Ayala, who turned 24 in February, has not fought in nearly five years. His last bout was Nov. 20, 1982, in Atlantic City, N.J., where he knocked out Carlos Herrera in the third round . . .

In Miami, Roberto Duran, who many suspect is still fighting at age 36 because he needs money, might be on his way to another big payday.

His 10-round unanimous decision over Juan Carlos Gimenez Saturday night might put him in the middleweight ratings. And, with the 160-pound division wide open, the Panamanian could get a shot at his fourth world title next year.

Duran, a champion in the lightweight, welterweight and junior middleweight divisions, improved to 82-7. Gimenez, ranked No. 8 among middleweights by the World Boxing Council, is 25-4-2.

"I'm not finished," Duran said. "A lot of people thought I was because my manager {Luis Spada} abandoned me and I had poor training habits . . . I tell you this, I know Roberto Duran isn't finished."