There was previously a co-main event between Daniel Dubois and Joseph Parker for the heavyweight title - but Dubois has been forced to withdraw because of illness.
Joseph Parker vs Martin Bakole is now one of the chief supporting acts after the feared heavyweight stepped in at short notice.
Martin Bakole took the fight on very short notice, only jetting into Riyadh for the fight against Parker on Friday morning.
However, the card lined up for Saturday night in Riyadh will certainly rival anything that has ever been put together in boxing - despite two late changes.
Beterbiev and Bivol bout is sparked from the pair's initial fight in the Middle East last October, where the former won a narrow decision for the undisputed light-heavyweight titles.
