Cain Velasquez leveled Brock Lesnar to claim the UFC heavyweight title.
The Alliance MMA pupil put his only career blemish behind him with a razor-thin unanimous decision win over Urijah Faber at UFC 132 this past July. The UFC bantamweight king has few weaknesses, but his power did little to damage Faber in their rematch. The 25-year-old defends the 135-pound belt against emerging contender Demetrious Johnson in October. — Ariel Shnerer, The Fight Network • Heavy.com's rankings • Inside Fights' rankings
Cain Velasquez, right, lands a left to the face of Brock Lesnar.
Lots of trouble
Brock Lesnar is knocked down by Cain Velasquez.
In bad shape
Brock Lesnar, foreground, takes punches from Cain Velasquez.
Cain Velasquez, top, punches Brock Lesnar during their heavyweight title fight at UFC 121.
Cain Velasquez, left, celebrates after he defeated Brock Lesnar with a first-round TKO.
Cain Velasquez, top, punches Brock Lesnar.
This is the end
The referee stops the fight as Cain Velasquez, center, punches Brock Lesnar.
Brock Lesnar is tended by a cut man after a losing his UFC heavyweight champion.
A defeated man
Brock Lesnarsits in his corner after being TKO'd in the first round by Cain Velasquez and losing his UFC heavyweight championship at UFC 121 in Anaheim, Calif., Saturday.