I was thinking on the same lines as Fenster, say for instance Kessler blasts Ward out in quick style lets says three rounds, basically a total beatdown. Then somehow Ward makes it to the final to fight Kessler again

Or maybe there is a bad beatdown and the guy stock falls in the event and is not getting as much money as he thought and decides he cant be arsed with the tournament anymore??

If there is no schedule either surely a fighter can just say nah im not doing that or something similar when they come to sitting down for the next rounds of fights.