Quinton Ramone Jackson (born June 20, 1978), also known as Rampage Jackson, is an American mixed martial artist and actor. He is a former UFC Light Heavyweight Champion. Jackson rose to prominence in Japan's Pride Fighting Championships where he was noted for his powerful body slams including a knockout victory over Ricardo Arona. In the United States, he is known for his tenure in the Ultimate Fighting Championship (UFC). Jackson is the first person to unify any of the UFC and Pride FC championship belts, defeating Pride Fighting Championships Middleweight title holder Dan Henderson in 2007. Jackson is currently ranked as the #5 Light Heavyweight fighter in the world by Sherdog, MMAWeekly and Yahoo! Sports.
Jackson appeared for a second time as a coach on the reality series The Ultimate Fighter opposite Rashad Evans. They were scheduled to fight at UFC 107, but this bout was cancelled when Jackson took a movie role to play B. A. Baracus in The A-Team feature film. Jackson guest co-hosted WWE Raw on June 7, 2010, along with his A-Team co-stars Bradley Cooper and Sharlto Copley. Jackson recently refuted any doubts to whether acting was getting in the way of his fighting by saying, “I got a whole bunch of movies coming up, they ain’t got nothing to do with my day job,” he retorted at a UFC 135 kickoff presser on July 19, 2011. “I turn down movies all the time to fight. This is my day job [fighting]. This is what pays my bills and puts my kids through college and stuff."
On December 9, 2007, it was announced by Dana White at Spike TV's Video Game Awards show that Jackson will be one of the two coaches of The Ultimate Fighter 7. At the conclusion of the season, Jackson fought the other coach and number one contender Forrest Griffin at UFC 86. During the show Jackson showed his temper after his fighters repeatedly lost to Team Forrest. Going into the semifinals, only two of Jackson's original fighters made the cut while Forrest had 6 of his fighters advance. In the finale Team Griffin's pick, Amir Sadollah beat Team Jackson's top fighter C.B. Dollaway via armbar in the first round.
On July 5, 2008, he fought Griffin for the light heavyweight championship at UFC 86 and lost a judges' decision. In the first round of the fight Jackson wobbled Griffin with two solid power punches, and soon after knocked Griffin down. Jackson's power proved to be problematic for Griffin as Jackson tagged him throughout the fight. In contrast, Griffin pushed the pace of the fight from start to finish and stayed much more aggressive than Jackson for most of the fight with multiple leg kicks and by mounting Quinton and landing elbows and punches to his head. In later rounds Jackson managed to take Griffin down twice and work his own ground game, almost executing his signature power bomb. Many took note as Jackson was showing obvious discomfort from the effects of the leg kicks. The next three rounds were described by Sherdog as "somewhat uneventful" with Jackson searching for the knockout punch while Griffin threw whatever he could with long jabs, leg and body kicks. Griffin was awarded a unanimous decision with the scores 46–48, 46–48 and 46–49 in what many considered an upset.
After the fight both Griffin and his coach Randy Couture expressed that they thought the fight was close, and Jackson's coach, Juanito Ibarra, had planned to protest the unanimous decision with the Nevada State Athletic Commission.However, after speaking with the commission about his complaint, he decided not to file because he was informed that even if the judges scores were changed to his satisfaction, the fight would still result in a victory for Griffin by a majority decision. Soon after the fight, Jackson fired his long time trainer/manager Ibarra. There were talks of an immediate rematch after the fight. Following the loss of his belt, Quinton was involved in a hit and run incident and a high speed police pursuit in Newport Beach, California, charges followed to which he would plead guilty