Champions who have more losses than wins

Mike Weaver?

I doubt there is one, a fighter with more losses than wins isn't getting a title shot and the champions aren't going to fight someone like that even as a tune up.

Rey Migreno Beat me to it. Upsets do happen, and no-hopers can get the belt with a little willpower and a well placed punch.

There have been world champs with lots of losses but never one with more loses than wins.

I do not think that is even possible Tuneup gone wrong plausibly.

yep. this isn't the ufc.

I do not think that is even possible