Tai Tuivasa

Tai Tuivasa, better known as "Bam Bam", brings a 15-10 record into every walk to the cage — and in a division as crowded as heavyweight, every single win matters.

On the feet he's a problem: 3.66 significant strikes a minute at 51% accuracy, and 93% of his wins end in a knockout. The math is bad for anyone standing across from him. Add the southpaw stance, and the puzzle gets harder still.

He's coming off a loss to Louie Sutherland. Careers aren't defined by the fall, though; they're defined by the rebound.