Jon "Bones" Jones
The youngest champion in UFC history with his only loss coming via a controversial disqualification for beating his opponent senseless. Jon "Bones" Jones is the current UFC light heavyweight champion and doesn't look ready to relinquish his title anytime soon. Jones has already brushed aside names like Mauricio "Shogun" Rua, Lyoto "The Dragon" Machida, Quinton "Rampage" Jackson, and Rashad Evans.
He's dominated the MMA scene in a variety of ways with eight of his 17 victories coming via knockout and another six via submission. In a sport where champions struggle to sustain long term dominance, Jones is looking to buck that trend this coming year.