Hasim Rahman continued his comeback with a fourth-round technical knockout against fellow American Shannon Miller.

Referee Charlie Fitch stopped the fight one minute and 37 seconds into the fourth round after the two-time former heavyweight champion sent Miller to the mat for the fourth time.

Rahman, who had knocked Miller woozy in the second round, dealt the final blow with a left jab followed by a right that sent him tumbling back into his own corner.

Despite Rahman's domination, Miller got in several good shots, including a solid right hand that stunned his opponent in the first round

Miller got up each time he was knocked down, including the last time, but the 36-year-old New Yorker did not argue when the fight was stopped.

Since his comeback began in March, Rahman has said he intends to fight as soon and as often as possible in a bid to land another title shot.

The 37-year-old is eyeing a potential a rematch against one of the Klitschko brothers, possibly as early as next year.