WEC 44: Brown vs. Aldo was a mixed martial arts event held by World Extreme Cagefighting. It took place on November 18, 2009 at The Pearl at The Palms in Las Vegas, Nevada.

WEC 37: Torres vs. Tapia was a mixed martial arts event held by World Extreme Cagefighting on December 3, 2008 at the Hard Rock Hotel and Casino in Las Vegas, Nevada. The event aired live on the Versus Network. WEC Bantamweight Champion Miguel Torres successfully defended his title again against Manny Tapia in the main event of the evening. In addition, former IFL standout Wagnney Fabiano made his WEC debut on this card. The Mark Munoz-Ricardo Barros fight was the final light heavyweight bout to be put on by the WEC. The division was absorbed into the UFC following this event. The event drew an estimated 671,000 viewers on Versus.

WEC 42: Torres vs. Bowles was a mixed martial arts event held by World Extreme Cagefighting on August 9, 2009 at the Hard Rock Hotel and Casino in Las Vegas, Nevada. Bantamweight champion Miguel Torres defends his title against no. 1 contender Brian Bowles in the main event.

WEC 35: Condit vs. Miura was a mixed martial arts event held by World Extreme Cagefighting that took place on August 3, 2008 at the Hard Rock Hotel and Casino in Las Vegas, Nevada. The event aired live on the Versus Network.

WEC 48: Aldo vs. Faber was a mixed martial arts event held by World Extreme Cagefighting that took place on April 24, 2010 at ARCO Arena in Sacramento, California. The event marked the WEC's debut on pay-per-view.

WEC 50: Cruz vs. Benavidez 2 was a mixed martial arts event held by World Extreme Cagefighting that took place on August 18, 2010 at The Pearl at The Palms in Las Vegas, Nevada.

UFC 132: Cruz vs. Faber was a mixed martial arts event held by the Ultimate Fighting Championship on July 2, 2011 at the MGM Grand Garden Arena in Las Vegas, Nevada.

UFC on FX 5: Browne vs. Bigfoot was a mixed martial arts event held by the Ultimate Fighting Championship on October 5, 2012, at the Target Center in Minneapolis, Minnesota.

WEC 40: Torres vs. Mizugaki was a mixed martial arts event held by World Extreme Cagefighting on April 5, 2009 at the UIC Pavilion in Chicago, Illinois. The event aired live on the Versus Network.

WEC 53: Henderson vs. Pettis was a mixed martial arts event held by World Extreme Cagefighting that took place on December 16, 2010 at Jobing.com Arena in the Phoenix suburb of Glendale, Arizona. The event was the first time that Zuffa has hosted an event in Arizona. This was the final WEC event before merging with UFC in 2011.