UFC 135: Jones vs. Rampage was a mixed martial arts event held by the Ultimate Fighting Championship on September 24, 2011 at the Pepsi Center in Denver, Colorado.

The Ultimate Fighting Championship had its first ever event in Denver nearly 20 years prior to UFC 135, but the promotion has not operated a pay-per-view event in the Mile High City since The Ultimate Ultimate in 1995. Zuffa, the UFC’s parent company, was not the owner back then. UFC president Dana White, in an interview with MMAWeekly.com, says that the company has long been on a course to return to Denver, but they wanted to do it the right way. “We knew that we wanted to bring a big exciting card back to Denver, and we finally got it done.”

Jon Jones was expected to make his first title defense on August 6, 2011 at UFC 133 against Rashad Evans, but Jones was sidelined with a hand injury. It was initially announced that the hand injury would require surgery, but Jones opted for rest and rehabilitation without surgery after further consultations with doctors. Jones' injury was originally thought to keep him out of action until late 2011, but instead, he made his first title defense against Quinton Jackson at this event.

Dana White (born July 28, 1969) is the current President of the Ultimate Fighting Championship (UFC), a mixed martial arts organization based in the United States.

Born in Manchester, Connecticut on July 28, 1969, White grew up in Las Vegas, Nevada, Ware, Massachusetts and Levant, Maine. White is a passionate Boston Red Sox fan. During his youth, he bounced back and forth between Boston and Maine. He attended the University of Massachusetts Boston but did not finish; however, while there he did launch a boxing program for inner-city youth.

White has a background as an aerobics instructor. In 1992, White established Dana White Enterprises in Las Vegas. He conducted aerobics classes at three gyms in the Las Vegas area and began managing MMA fighters Tito Ortiz and Chuck Liddell.

While working as a manager, White learned that Semaphore Entertainment Group, the parent company of the UFC, was looking for a buyer for the UFC. White contacted childhood friend Lorenzo Fertitta, an executive at Station Casinos, and a former commissioner of the Nevada State Athletic Commission. Within a month, Lorenzo and his older brother Frank bought the UFC, with White installed as its president. White currently owns about 9% of Zuffa, LLC, the entity the Fertitta brothers created to own and manage the UFC.

Nathan Donald Diaz (born April 16, 1985) is an American mixed martial artist of Mexican descent, currently competing for the UFC in the welterweight and lightweight divisions. He is the Ultimate Fighter Season 5 champion and has amassed victories in Strikeforce and World Extreme Cagefighting.

Diaz is a graduate of Tokay High School in Lodi, California and holds a black belt in Cesar Gracie Jiu-Jitsu. He is the younger brother of former Strikeforce Welterweight Champion Nick Diaz. Diaz is affiliated with the Cesar Gracie Jiu-Jitsu Academy in Lodi, California, where he trains under Brazilian Jiu-Jitsu black belt Cesar Gracie. Diaz received his black belt in Brazilian Jiu-Jitsu on April 6, 2012 from Cesar Gracie. He is currently ranked #7 lightweight fighter in the world.

He was a contestant on The Ultimate Fighter 5 show, of course exclusively featuring lightweights. He fought on Jens Pulver's team. In the preliminary round, Diaz defeated Rob Emerson by submission; in the quarterfinals he defeated fellow Team Pulver teammate Corey Hill via triangle choke in the first round. In the semifinals, he defeated Team Penn member Gray Maynard by submission, advancing to the finals where he faced Manvel Gamburyan.

Takanori Gomi (五味隆典, Gomi Takanori^?, born September 22, 1978), is a Japanese mixed martial artist currently fighting in the Ultimate Fighting Championship. Gomi is a former Shooto Welterweight Champion and was the last and only Pride Lightweight Champion. He is also a four-time All Japan Combat Wrestling champion. During his time in Pride he was considered to be the top Lightweight fighter in the world. Known for having a great chin, Gomi has never been finished by strikes. He is widely considered to be the greatest Japanese MMA fighter of all time.

Gomi was born in Kanagawa, Japan in 1978. He started boxing at Sagamihara Yonekura Gym in 1994 while he was attending Kanagawa Prefectural Aikawa Higashi Junior High School. Gomi was very athletic and was the pitcher of the school's baseball team, but dropped out of high school in 1996 when he failed to pass on to the next grade. This caused an argument between Gomi and his father who disowned him as a result of the incident. Gomi then went on to learn freestyle wrestling and catch wrestling at Kiguchi Dojo and competed in many wrestling tournaments throughout Japan, the pinnacle of his grappling career being his four All Japan Combat Wrestling championships, in which he defeated a number of the nation's top grapplers, future opponent Mitsuhiro Ishida amongst them.^{[citation needed]}