A challenger has to TAKE the World Title away from the Champion.
He's not supposed to be there to stay away from the Champ, avoiding contact.

It's bizarre that it even has to be verbalized, but if a man's a world-class professional fighter, then he's being paid to fight, not to skedaddle around the ring avoiding conflict.

A man has to demonstrate that he's there to fight and to beat that Title out of the current Title Holder.