The only behind the scenes story I can remember of closed door sparring was Anderson beating Vitor in training and in a championship fight.
I don't think Luke is really that good at all though. He's gonna be mid tiered once he enters the eight sided cage.
Marcus Aurelius: Tell me again, Maximus, why are we here?
Maximus: For the glory of the Empire, sire.
Baked, not fried... the healthy choice.