After first opponent Tyrone Spong has been removed oleksandr Usyk will confront Chazz Witherspoon in his heavyweight introduction.
Unbeaten Usyk was due to combat Spong at the Wintrust Arena live on Sky Sports, but as a result of returning a negative doping test, the Illinois State Athletic Commission will not license him to take part.
Witherspoon (38-3 29 KOs), second cousin of former two-time world heavyweight ruler Tim Witherspoon, is unbeaten in five decades with his last win coming in March at Atlantic City over Santiago Silgado.
TheGentleman is relishing the opportunity and will soon look to pull off an upset when he takes on the cruiserweight champion
I can not wait to confront Usyk in Chicago, said that the 38-year-old Philadelphian. Ive been in training ready for a big fight, and it will not get bigger than that. Oleksandr is currently stepping into heavyweight – and hes going to find out that it is a game.
I have won my last eight fights and I truly feel that Ive been waiting in the wings to get a huge chance like this and I am going to put every ounce of myself to the fight on this gigantic point
After he had been forced to withdraw against Carlos Takam earlier this year from his battle the heavyweight debut of usyk is long-awaited.
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