When middleweight slugger Nate Quarry (11-3 MMA, 6-2 UFC) steps into the cage against Tim Credeur (12-2 MMA, 3-0 UFC) on the main card of “UFC Fight Night 19: Diaz vs. Guillard” on Sept. 16, there will be a bit of an old-school feel to the contest.

But despite an apparent striking advantage on the feet [...]