LAS VEGAS -- There was a time when Mike Tyson thought no one could beat him.

Tyson was 20 years old and the youngest heavyweight champion ever, with the world at his feet and a bright boxing future ahead of him.

	Mike Tyson now has a no-contest on his record.

It was just 13 years ago, but it must seem to Tyson that an eternity has passed between the time he terrorized the boxing world to now, when he is merely another heavyweight on the comeback trail.

"When I was 20, I didn't feel a guy with a gun could beat me," Tyson said. "Now I still feel I can conquer the world, but I know now it takes a lot of hard work and sacrifice."

Tyson returns to the ring Saturday night for just the eighth time in eight years when he meets Orlin Norris in a scheduled 10-round fight.

He's coming off yet another stint in prison and had to lose nearly 60 pounds to get back into fighting shape for the fourth comeback of his once remarkable career.

"I still feel young," Tyson said. "I'm strong and believe I can still compete with the current crop of heavyweights."

Tyson didn't show that in January against Francois Botha, who won the first four rounds on two ringside scorecards before being knocked silly by a single Tyson right hand in the fifth round.

He hopes to show it against Norris, who was picked for this fight by Tyson's handlers because they don't feel he can hurt Tyson. Yet, Norris has the boxing skills to give Tyson much-needed rounds in the ring.

"If I'm rusty, I'm rusty," Tyson said. "I'll still look sensational. I'm in a perfect frame of mind for fighting."

Norris, a 34-year-old former cruiserweight champion, has had only mediocre success in the heavyweight ranks. This fight, though, is one he has wanted for more than a decade, from the time when Tyson seemed invincible.

Tyson is a 10-1 favorite in his first fight since serving 3½ months in a Maryland jail for assaulting two motorists after a minor accident.

He weighed in Thursday at 223 pounds to 218 for Norris.

While Tyson has not been active, Norris hasn't exactly been fighting on a regular basis. Norris has fought less than one full round in 14½ months, stopping Pele Reid in the first round of their June 26 fight in London.

"I expect Tyson to come out and try to blow me out in one, two or three rounds," Norris said. "That's the type of fighter he is. He wants to get it over with quickly and get out of there. I knew that way back. It doesn't bother me at all."

Tyson (46-3, 40 knockouts) is reportedly getting $10 million for the fight, which will be televised by Showtime to the cable network's subscribers. Norris (50-5, 27 knockouts) will get his biggest payday, an $800,000 purse.

Also on the telecast will be an IBF junior lightweight title fight between champion Roberto Garcia (32-0, 24 knockouts) and No. 1 contender Diego Corrales (28-0, 23 knockouts) of San Diego.

It will be Garcia's third defense of the 130-pound title he won on points over Harold Warren on March 13, 1998.