Heavyweight champion Brock Lesnar makes his return to the Octagon tonight after a long and winding road of health problems ultimately diagnosed as diverticulitis.

Lesnar faces a stiff test in challenger Shane Carwin, a massive slab of a man with one-punch knockout power. Carwin became "interim" UFC Heavyweight Champion during Brock's convalescence, which is why both men have belts over their shoulders. This fight will unite the Heavyweight title and produce the undisputed champ.