WEC 25: McCullough vs. Cope was the first mixed martial arts event held by the World Extreme Cagefighting under Zuffa management.
WEC 26: Condit vs. Alessio was the second mixed martial arts event held by the World Extreme Cagefighting under Zuffa management.
WEC 27: Marshall vs. McElfresh was the third mixed martial arts event held by the World Extreme Cagefighting under Zuffa management.
WEC 28: Faber vs. Farrar was the fourth mixed martial arts event held by the World Extreme Cagefighting under Zuffa management.
WEC 30: McCullough vs. Crunkilton was a mixed martial arts (MMA) event held by World Extreme Cagefighting (WEC).
WEC 31: Faber vs. Curran was a mixed martial arts (MMA) event held by World Extreme Cagefighting (WEC).
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He won his first two fights with the organization, the first a knockout win in his debut and in his second fight with the organization he faced future Cage Rage British Middleweight Champion Mark Weir, a fellow UFC veteran who had also fought in the WEC.
Muñoz was one of the chosen few to be relocated to WEC's sister promotion—which is also owned and produced by Zuffa—along with light heavyweight champion Steve Cantwell, light heavyweight contenders Brian Stann and Steve Steinbeiss and middleweight contenders Chael Sonnen and Nissen Osterneck.
Under his management, the WFA acquired top ranked MMA fighters to include future UFC champions, Rich Franklin, Quinton Jackson, and Lyoto Machida, as well as Urijah Faber who became a champion in the WEC.
After acquiring a 3–0 record in smaller shows, Cantwell made his WEC debut at WEC 26 in 2007 against Brian Stann, where he suffered a quick TKO loss.
Former World Extreme Cagefighting announcer Joe Martinez announced this event in place of Jimmy Lennon Jr., as Lennon was announcing that same night's Showtime-broadcast Super Six World Boxing Classic boxing card headlined by Carl Froch & Andre Ward.
Jens "Little Evil" Pulver - Mixed Martial Arts Fighter, Ultimate Fighting Champsionship (UFC) lightweight champion, and former featherweight with World Extreme Cagefighting (WEC).
Founded and operated by brothers Adam Singer and Rory Singer, The HardCore Gym has produced professional fighters such as former Ultimate Fighting Championship champion and The Ultimate Fighter season one winner Forrest Griffin, former World Extreme Cagefighting bantamweight champion Brian Bowles, upcoming heavyweight prospect Chris Barnett, former UFC fighter Cale Yarbrough, and others.
Wagnney Fabiano had signed with the Zuffa owned company, and has expressed interest in a matchup with former WEC Featherweight Champion Urijah Faber.