Gary & # 39; spike & # 39; O & # 39; Sullivan's hopes for a world title were ended on Saturday night after just 164 seconds at middleweight against David Lemieux in Las Vegas.
The Cork fighter went into the WBA title-holder and knew that a win would have prepared him for a shot on the belt.
But he was dropped towards the end of the first, the French Canadian unleashes a vicious left hook.
The Mahon man went down and the fight was stopped by umpire Russell Mora, which meant he never had a chance to get started.
There was a fierce war of words between the boxers under construction, with Lemieux saying that he wanted to damage his opponent "for life".
Fortunately, it never came to that, with the contest ending after a single, hammer-like blow after 2:44 of the 29-year-old's first.
O & Sullivan had landed a couple of decent shots, but when he tried to track a Jab Lemieux, known as one of the heaviest thugs on the middleweight circuit, he caught him.
He went down, Mora did not even bother to finish the fight before calling the fight. He finally got up, though he looked uncertain.
With 34, O & # 39; Sullivan now has to decide whether he wants to rebuild after his third defeat in 31 professional fights or not.