As I said, there shouldn't (as in can't) be multiple champions in a league for individuals. Even choosing the winner by random if neither of the finalists wants to play is, no doubt, a better course of action.

Of course, this stands only if someone'd be going to give both finalists an equal title.
You can make the other one the champion and give the other one a title of lesser value.

The point is that it's just plain stupid even thinking about sharíng one single thing, such as a title. We badly need a final. Play whenever u can, since two equal champions is but crap.