The numbers won’t play out that the UFC has had as many interim champions as traditional champs the past decade or so, but it seems to feel that way sometimes. In recent months, the interim title that has been at the forefront of most conversations about such things is the one held by heavyweight Tom Aspinall. He has the interim title while champ Jon Jones continues to recover from shoulder surgery. Normally, the champ would fight the interim titleholder to unify the belts. In this case, that won’t happen immediately.
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Jon Anik has an idea about UFC interim titles that makes a whole lot of sense – MMA Junkie