World Series of Fighting, also known as WSOF, is an American mixed martial arts (MMA) promotion based in Las Vegas, Nevada. The inaugural WSOF event took place on November 3, 2012 and the main card was broadcast on the NBC Sports Network.

The Ultimate Fighter 11 Finale was a mixed martial arts event that was held by the Ultimate Fighting Championship at the Palms Casino Resort in Las Vegas, Nevada, United States on June 19, 2010. Featured were the finalists from The Ultimate Fighter: Team Liddell vs. Team Ortiz in the Middleweight division and a fight between Keith Jardine and Matt Hamill.

UFC 122: Marquardt vs. Okami was a mixed martial arts event held by the Ultimate Fighting Championship on November 13, 2010 at König Pilsener Arena in Oberhausen, Germany. Vitor Belfort was set to face Yushin Okami in the main event, with the winner receiving a middleweight title shot. However, on September 21, 2010, Belfort withdrew from the fight to face Anderson Silva. Nate Marquardt ended up fighting Yushin Okami in the main event, which would still determine the next #1 contender.

UFC Fight Night 24: Nogueira vs. Davis was a mixed martial arts event held by the Ultimate Fighting Championship on March 26, 2011 at the KeyArena in Seattle, Washington. Dana White alerted followers on Twitter that Tito Ortiz had to pull out of his fight with Antônio Rogério Nogueira, after receiving a severe cut on his forehead, and would be replaced by Phil Davis.