December 29, 2007 ~ UFC 79: Nemesis at the Mandalay Bay Events Center in Las Vegas, Nevada. The main event features The Ultimate Fighter 6 coaches Matt Serra and Matt Hughes squaring off for Serra's UFC welterweight championship, which Serra won at UFC 69: Shootout on April 7, 2007, in an upset victory over Georges St. Pierre. Hughes, a two-time welterweight title holder, last lost the title to St. Pierre at UFC 65: Bad Intentions on November 18, 2006. Also on the card is the long anticipated fight between Chuck Liddell and Wanderlei Silva.