UFC 100 was a mixed martial arts event produced by the Ultimate Fighting Championship (UFC) on July 11, 2009, in Las Vegas, Nevada. The main event was a rematch between UFC Heavyweight Champion Brock Lesnar and Interim UFC Heavyweight Champion Frank Mir.

UFC 102: Couture vs. Nogueira was a mixed martial arts event held by the Ultimate Fighting Championship (UFC) on August 29, 2009 at the Rose Garden in Portland, Oregon. It featured former UFC Heavyweight and Light Heavyweight champion, Randy Couture, facing off against former PRIDE Heavyweight champion and former UFC Interim Heavyweight champion, Antonio Rodrigo Nogueira.

UFC 103: Franklin vs. Belfort was a mixed martial arts event held by the Ultimate Fighting Championship (UFC) on September 19, 2009 in Dallas at the American Airlines Center.

UFC 109: Relentless was a mixed martial arts event held by the Ultimate Fighting Championship (UFC) on February 6, 2010 at the Mandalay Bay Events Center in Las Vegas, Nevada.

UFC 107: Penn vs. Sanchez was a mixed martial arts event held by the Ultimate Fighting Championship (UFC) on December 12, 2009 in Memphis, Tennessee at the FedExForum.

UFC 87: Seek and Destroy was a mixed martial arts event held by the Ultimate Fighting Championship on August 9, 2008, at the Target Center in Minneapolis, Minnesota. The card was headlined by a welterweight championship bout between champion Georges St. Pierre and challenger Jon Fitch.

UFC 86: Jackson vs. Griffin was a mixed martial arts event held by the Ultimate Fighting Championship (UFC) on July 5, 2008, at the Mandalay Bay Events Center in Las Vegas, Nevada. The title bout between Quinton "Rampage" Jackson and Forrest Griffin, coaches on The Ultimate Fighter: Team Rampage vs. Team Forrest, was for Jackson's UFC Light Heavyweight Championship.

UFC 88: Breakthrough was a mixed martial arts event held by the Ultimate Fighting Championship (UFC) on September 6, 2008 at the Philips Arena in Atlanta, Georgia. The event was headlined by a light heavyweight bout between Chuck Liddell and Rashad Evans.

UFC 91: Couture vs. Lesnar was a mixed martial arts event held by the Ultimate Fighting Championship (UFC) on November 15, 2008, at the MGM Grand Garden Arena in Las Vegas, Nevada. The main event featured the return of UFC Heavyweight Champion Randy Couture versus WWE's Brock Lesnar in a title bout. The decision to grant Lesnar—who was 1–1 in UFC fights at the time—the title shot was controversial at the time. Some felt it was premature and marketing driven, while others argued the relative lack of depth in the heavyweight division at the time left no clear-cut contenders to the belt.

UFC 90: Silva vs. Côté was a mixed martial arts (MMA) pay-per-view event held by the Ultimate Fighting Championship (UFC) on October 25, 2008, at the Allstate Arena in Rosemont, Illinois. The main event featured UFC Middleweight Champion Anderson Silva vs. number #1 contender Patrick Côté.

UFC 108: Evans vs. Silva was a mixed martial arts event being held by the Ultimate Fighting Championship (UFC) on January 2, 2010 in Las Vegas, Nevada at the MGM Grand Garden Arena.

UFC 92: The Ultimate 2008 was a mixed martial arts event by the Ultimate Fighting Championship (UFC) held on December 27, 2008 at the MGM Grand Garden Arena in Las Vegas, Nevada. The main event featured number-one contender Rashad Evans fighting the UFC Light Heavyweight Champion Forrest Griffin.

UFC 93: Franklin vs. Henderson was a mixed martial arts event held by the Ultimate Fighting Championship (UFC) on January 17, 2009 at The O2, Dublin in Dublin, Ireland. The main event featured a Light Heavyweight bout between former UFC Middleweight Champion Rich Franklin and former Pride Middleweight Champion and Pride Welterweight Champion Dan Henderson. The winner of the fight would become the coach opposite Michael Bisping for the ninth season of The Ultimate Fighter: United States vs. United Kingdom.

UFC 94: St-Pierre vs. Penn 2 was a mixed martial arts event held by the Ultimate Fighting Championship (UFC) on January 31, 2009. The main event featured the rematch of the UFC Welterweight Champion Georges St-Pierre against the UFC Lightweight Champion BJ Penn for the UFC Welterweight Championship.

UFC 95: Sanchez vs. Stevenson was a mixed martial arts event held by the Ultimate Fighting Championship (UFC) on February 21, 2009, at The O2 Arena in London, United Kingdom. The main event was a lightweight match-up between Diego Sanchez vs. Joe Stevenson.

UFC 97: Redemption (not to be confused with UFC 17: Redemption) was a mixed martial arts event held by the Ultimate Fighting Championship (UFC) on April 18, 2009 in Montreal, Quebec, Canada. The main event was UFC Middleweight Champion Anderson Silva vs. Thales Leites.

UFC 96: Jackson vs. Jardine a mixed martial arts event held by the Ultimate Fighting Championship (UFC). It was held in Columbus, Ohio on March 7, 2009 at Nationwide Arena. The card was headlined by a Light Heavyweight bout between Quinton Jackson and Keith Jardine. Following the main event, Rashad Evans, training partner of Jardine and then-Light Heavyweight Champion, entered the cage and publicly challenged Jackson. It resulted in a long-standing feud between the two that would not be settled until 2010.

UFC 98: Evans vs. Machida was a mixed martial arts event held by the Ultimate Fighting Championship (UFC) on May 23, 2009 in Las Vegas, Nevada. Quinton Jackson, former UFC Light Heavyweight champion, was to fight the undefeated current champion Rashad Evans but had to undergo arthroscopic surgery to repair ligament damage in his jaw that he received in a previous training camp. Instead, Evans headlined the card against fellow undefeated contender Lyoto Machida.

UFC 99: The Comeback was a mixed martial arts event held by the Ultimate Fighting Championship (UFC) on June 13, 2009 in Cologne, Germany. It was the first UFC event held in Germany, as well as the first in mainland Europe (events have previously been held in both the U.K. and Ireland). The main event was a catch weight bout between Rick Franklin vs Wanderlei Silva.

UFC 101: Declaration was a mixed martial arts pay-per-view event held by the Ultimate Fighting Championship (UFC) on August 8, 2009 in Philadelphia, Pennsylvania. It was the first UFC event held in Philadelphia. The event featured the second title defense of Lightweight Champion BJ Penn against Kenny Florian, and a non-title Light Heavyweight bout for Middleweight Champion Anderson Silva against former Light Heavyweight Champion Forrest Griffin.