But before they face off on Saturday night, they'll first come eye-to-eye on the set of "Jimmy Kimmel Live."
This weekend, light heavyweight champion Jon Jones and former light heavyweight champion Rampage Jackson will fight in the main event of UFC 135 in Denver, and the buildup between the athletes has been nothing if not tense.
Tonight, the two will come face-to-face for the first time since the fight announcement when they appear together as guests on Jimmy Kimmel Live.
It's unknown at press time whether the third guest on the show, Dr. Phil, will be brought in to try and smooth things over between the two.
Jimmy Kimmel Live airs tonight (Sept. 19) at midnight EST on ABC.
Anyone think "Bones" and "Rampage" can stay on their best behavior? Or will these two get the main event started early on their trip to Los Angeles?