UFC 83: Serra vs St-Pierre 2 was a mixed martial arts event held by the Ultimate Fighting Championship. The event was held on April 19, 2008, at the Bell Centre in Montreal, Quebec, Canada. UFC 83 was the UFC's first event in Canada. It was headlined by UFC Welterweight Champion Matt Serra and UFC Interim Welterweight Champion Georges St. Pierre in a match to unify the championship.

UFC 77: Hostile Territory was a mixed martial arts event held by the Ultimate Fighting Championship (UFC). The event took place on Saturday, October 20, 2007 at the U.S. Bank Arena in Cincinnati, Ohio. The main event featured Anderson Silva defending his middleweight championship against Rich Franklin in a rematch of their October 2006 meeting at UFC 64, which Silva won.

UFC 71: Liddell vs. Jackson was a mixed martial arts event held by the Ultimate Fighting Championship. The event took place on Saturday, May 26, 2007 at the MGM Grand Garden Arena in Las Vegas, Nevada. The main event was the rematch between UFC Light Heavyweight Champion "The Iceman" Chuck Liddell and Quinton "Rampage" Jackson. Jackson was the only fighter to have an unavenged win against Liddell.

The Ultimate Fighter 3 Finale was a mixed martial arts event held by the Ultimate Fighting Championship (UFC) on June 24, 2006. Featured were the finals from The Ultimate Fighter 3 in both the Middleweight and Light Heavyweight divisions as well as a main event between Kenny Florian and Sam Stout. During the event Randy Couture was inducted in to the UFC Hall of Fame and the return of Jens Pulver was announced.

UFC 64: Unstoppable was a mixed martial arts event held by the Ultimate Fighting Championship on Saturday, October 14, 2006. The card centered on a UFC Middleweight Championship defense by Rich Franklin against highly-touted Anderson Silva, Franklin's first defense in 7 months.