Oleksandr Usyk will face Chazz Witherspoon within his introduction on Saturday after first opponent Tyrone Spong has been removed.
Unbeaten Usyk was due to combat Spong at the Wintrust Arena, Chicago, live on Sky Sports, but as a consequence of returning a negative doping test, the Illinois State Athletic Commission will not permit him to take part.
Witherspoon (38-3 29 KOs), second cousin of former world heavyweight ruler Tim Witherspoon, is unbeaten in five decades with his last win coming in March in Atlantic City over Santiago Silgado.
TheGentleman will be looking to pull off an upset when he chooses on the undisputed cruiserweight champion and is relishing the opportunity
I cant wait to confront Usyk in Chicago, stated the 38-year-old Philadelphian. I have been in training prepared for a huge fight, and it doesnt get bigger than that. Oleksandr is stepping up to heavyweight – and hes going to discover that it is a different game.
Ive won my last eight fights and I truly feel that I have been waiting in the wings for a massive chance like this and I am going to put every ounce of myself to the struggle with this enormous point
The r introduction of usyk is long-awaited after he had been forced to withdraw earlier this year.