LAS VEGAS - Floyd Mayweather Jr. didn't need to dance to beat Ricky Hatton. His fists proved a lot more potent than his feet.

Mayweather, 30, remained unbeaten last night and retained his claim to being the best pound-for-pound fighter in the world by stopping Hatton in the 10th round of a brawl that featured none of the fancy footwork he has shown in the ring and on reality TV.

Hatton, 29, wouldn't let Mayweather move, but it didn't matter as Mayweather used precision punches to wear down the challenger for his World Boxing Council welterweight crown at the MGM Grand Garden Arena.

Hatton kept trying to get inside and score points, but Mayweather had an answer for everything he did.

The end came after Mayweather landed a crushing left hook that dropped Hatton on his back in Mayweather's corner. Hatton got up at the count of eight, but Mayweather almost immediately got him on the ropes and landed another flurry of punches to the head.

Hatton went down almost on a delayed reaction, while at the same time referee Joe Cortez moved in to stop the fight. Hatton's corner threw in the towel at 1 minute, 35 seconds of the round.

It was the first loss in 44 fights for Hatton, a brawler from Manchester, England. Mayweather was able to pile up points and seemed to be cruising for an easy decision win when he shot out the left hook that was the beginning of the end for Hatton.

"I knew it was going to be tough," Mayweather said. "That's why I didn't do anything halfway."

Mayweather (39-0) was ahead by 89-81 on two ringside scorecards and by 88-82 when he scored the thundering punches that stopped Hatton.

It was Mayweather's hometown, but Hatton's crowd at the MGM Grand while some 350,000 British homes were expected to spend about $30 for a pay-per-view bout that began about 5 a.m. in London.

Mayweather was joined by fellow

Dancing With the Stars

competitors Mark Cuban, Wayne Newton and Helio Castroneves on his walk to the ring.