Williams stuns Tyson with fourth-round KO

LOUISVILLE, Ky. -- Mike Tyson was knocked out in the fourth round Friday night in a shocking end to the latest comeback of the fighter who once was the most feared heavyweight of his era.

Unheralded British heavyweight Danny Williams landed a flurry of punches that sent Tyson sprawling into the ropes, perhaps ending his career.

Tyson went down from a final right hand, then laid helplessly along the ropes, blood streaming down his face. He tried to get up to beat the count, then fell down again and the fight was waved to a stunning close at 2:51 of the fourth round.

"People forget this isn't a peak Mike Tyson. This was a Mike Tyson who was 38 years old," Williams said. "I thought I could win."

The fight was a free-for-all from the opening bell, with Tyson landing some huge left hooks early and winning the first three rounds. But Williams also was landing punches well.

"I felt like I had him," Williams said.