UFC 79: Nemesis was a mixed martial arts (MMA) event held by the Ultimate Fighting Championship (UFC), that took place on December 29, 2007 at the Mandalay Bay Events Center in Las Vegas, Nevada. The main event featured the highly anticipated rubber match between former UFC Welterweight Champions Georges St. Pierre and Matt Hughes. The Co-main event featured a fight between Chuck Liddell and Wanderlei Silva.

UFC 66: Liddell vs. Ortiz was a mixed martial arts event held by the Ultimate Fighting Championship on December 30, 2006. UFC 66's main event was a championship fight with two of the UFC's biggest light heavyweight stars, Light Heavyweight Champion Chuck Liddell defending his title against former champion Tito Ortiz.

UFC Fight Night 6.5: Ortiz vs. Shamrock 3 was a mixed martial arts event held by the Ultimate Fighting Championship on October 10, 2006. The event took place at the Seminole Hard Rock Hotel and Casino in Hollywood, Florida and was broadcast live on Spike TV in the United States and Canada. The main event featured the third and final encounter between Tito Ortiz and Ken Shamrock. At UFC 61, the two fighters met for a second time, with Ortiz reigning victorious via technical knockout.

UFC 33: Victory in Vegas was a mixed martial arts event held by the Ultimate Fighting Championship at the Mandalay Bay Events Center on the Las Vegas Strip in Las Vegas, Nevada on September 28, 2001. The event was seen live on pay per view in the United States, and later released on home video.

UFC 32: Showdown in the Meadowlands was a mixed martial arts event held by the Ultimate Fighting Championship at the Continental Airlines Arena in East Rutherford, New Jersey on June 29, 2001. The event was seen live on pay per view in the United States, and later released on home video.