He staggered to his feet a second time but Pabon stopped the fight leaving Haye to milk the cheers from a boisterous 30, 000-strong crowd.
Now, though, the power-punching showman from Swansea is determined to use his Haye humiliation to drive him to follow in the giant footsteps of champion Calzaghe.
The Ukrainian told BBC Radio 5 live he is "ready to give Haye a fight and to knock him out" once he has got past American Kevin Johnson on 12 December.
Britain's WBA heavyweight champion David Haye hopes to take on Wladimir Klitschko in July before meeting his brother Vitali - the WBC champion - in the Londoner's final fight before retiring ahead of turning 31 in October.
"I told my brother, 'I want to fight Haye', but he said no, he wants to fight him, " said Klitschko.
Haye is determined to press on with his plans to fight Klitschko and shake up the heavyweight division.
Haye had hoped to meet either of the Klitschko brothers, who hold the other recognised world heavyweight titles, after beating Ruiz.
Haye is expected to fight former two-time world heavyweight champion John Ruiz next and is confident of "knocking him spark out".
However, Haye would have to overcome at least two stumbling blocks before a fight with either Klitschko could get the go-ahead.
Maccarinelli's defeat to Haye is one of two blemishes on his 29-fight record while Afolabi, also 28, has one loss and three draws in his 13-fight career.
"Almost immediately, Klitchsko's American advisors spoke to Haye's American advisors and said 'let's try and get this fight done - it's a fight that the sport needs', " said Costello.
Haye has pointed to worldwide attraction to the scuffle in Germany -- 20 million views of a YouTube video showing him brandishing a glass bottle -- as justification for Saturday's fight.
Ruiz's last fight was the loss to Haye as he challenged for the Londoner's WBA heavyweight, eventually being stopped in the ninth round having been on the canvas four times inside the opening six sessions.
Mr de la Haye said he hoped to select a chairman by the end of May.
Promoter Frank Warren criticised Harrison and suggested he should not have been allowed to face Haye.
Haye had been scheduled to fight Wladimir last summer before being scuppered by a back injury.
Either one is expected to fight Haye later this year if Haye defeats John Ruiz in April.
Speaking later during the press conference, 32-year-old Klitschko repeated his promise to make Haye regret his words.
"No disrespect to David Haye, but no-one is talking about David Haye, " said Harrison, an Olympic champion in 2000.
And Costello added that the cancellation could be good news for people wanting to see Haye fight a Klitschko.
Contrary to David Haye, Dereck Chisora really went for it and really tried.
Chisora then left the stage to confront Haye after the pair had traded insults at which point the scuffle ensued.
Wladimir, 33, who has a record of 52 wins and three losses, with 46 knockouts, vowed to make Haye "eat his words".
Haye's plans to fight both Ukrainian brothers have fallen through before, but Klitschko appears keen to make the fight happen later this year.
The 28-year-old, who lost his WBO title to David Haye in March 2008, continues his comeback against Ola Afolabi for the interim WBO cruiserweight belt.
After Saturday's loss at the LG Arena, Haye has urged Maccarinelli to take his time in deciding whether he should continue his career in the ring.
"I was never going to let the loss to David Haye be the end of my career, " said Maccarinelli, who has 28 wins from 30 pro fights.
Former WBO champion Maccarinelli was hoping to continue his rehabilitation following his unification defeat to David Haye at the O2 Arena 12 months ago, where the Swansea showman lost his WBO crown.
It was Rees's first defeat in 28 professional bouts and compounded a bad month for trainer Enzo Calzaghe, whose WBO cruiserweight champion Enzo Maccarinelli lost his title to David Haye a fortnight ago.
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