Boxer Haroon Khan tweeted that his brother "will be back" after suffering a second defeat against Danny Garcia in Las Vegas.
David Haye has defeated Dereck Chisora in their heavyweight fight tonight at Upton Park.
The 31-year-old Briton won by TKO in the fifth round.
The David Haye v Dereck Chisora fight is now underway.
Earlier, former Olympic champion Audley Harrison and former undisputed super-middleweight world champion Joe Clazaghe tweeted the following predictions:
Prediction time! haye-chisora...Haye has a point to prove, feels chisora is not in his class, so will start fast. Haye early, or if chisoraFrom @audley_Harrison on Twitter:
Going for HAYE KO and KHAN POINTS. tonight. AGREED??From @RealJoeCalzaghe on Twitter:
I don't see Chisora being KO'd, just outboxed. Chisora is more likely to get a KO win than Haye…but thats y they settle it in the ring!From @LennoxLewis on Twitter:
David Haye is preparing for his fight against British heavyweight rival Dereck Chisora this evening. He tweeted:
Just getting my pre-fight braids tightened!!! I'm feeling sharp....From @mrdavidhaye on Twitter:
He also wrote that he was looking forward to fellow boxer Amir Khan's fight tonight.
David Haye has branded British heavyweight rival Dereck Chisora a 'joke'.
The two rivals meet at Upton Park today in a fight that will be attended by more than 30,000 spectators and watched by an estimated 500,000.
Five months of controversy, hearings, legal challenges and insults will come to an end when the sworn enemies collide in the ring. The shameful brawl in Munich that disgraced British boxing initiated the feud.
"It's fair to say I really don't like Chisora - I fought him for free in February - but there will be no emotion in the fight," Haye said.