I was going to say he should fight against Rich then I realized he did already. It's kinda sad but all the best fights with Griffin will be rematches; Rampages*, Bonnar, Tito, Shogun, and Anderson Silva*.
*Hasn't happened yet, but should.
Marcus Aurelius: Tell me again, Maximus, why are we here?
Maximus: For the glory of the Empire, sire.
Baked, not fried... the healthy choice.