WEC 25: McCullough vs. Cope was the first mixed martial arts event held by the World Extreme Cagefighting under Zuffa management.
 The event was held on January 20, 2007.
 "WEC 25"'s main event was a championship fight for the vacant WEC Lightweight Title, between rivals Rob McCullough and Kit Cope.
 The co-main event was a WEC Featherweight Title bout between champion, Urijah Faber and challenger Joe Pearson.
Hermes França Barros (] ; born August 26, 1974) is a Brazilian mixed martial artist.
 He has competed for the UFC, WEC, MFC, and Israel FC.
 He is a former WEC Lightweight Champion, and former UFC Lightweight Championship contender.
Benson Henderson (born November 16, 1983) is an American mixed martial artist who competes for Bellator MMA, and is a former UFC Lightweight Champion and WEC Lightweight Champion.
The year 2009 is the 9th year in the history of World Extreme Cagefighting, a mixed martial arts promotion based in the United States.
 In 2009 WEC held 8 events beginning with, "WEC 38: Varner vs. Cerrone".
Gabriel G. "Gabe" Ruediger (born August 29, 1977) is a former American mixed martial artist, who competed in the Lightweight division for the UFC, WEC and Tachi Palace Fights.
 He is a former WEC Lightweight Champion, and former TPF Lightweight Champion.
James Christopher Varner (born October 12, 1984) is a retired American mixed martial artist who fought in the Ultimate Fighting Championship.
 He is the former WEC Lightweight Champion.
Anthony Paul Pettis (born January 27, 1987) is an American mixed martial artist currently competing as a Lightweight in the Ultimate Fighting Championship (UFC), where he is the former UFC Lightweight Champion.
 Pettis was also the final WEC Lightweight Champion prior to the promotion being merged into the UFC.
 At one point, he was ranked as a top-ten pound for pound fighter.
 He is currently ranked #13 in the official UFC lightweight rankings.
Gilbert "El Niño" Melendez (born April 12, 1982) is an American mixed martial artist who has fought at Featherweight and currently fights at featherweight in the Ultimate Fighting Championship (UFC).
 He is a two-time Strikeforce Lightweight Champion and a former WEC Lightweight Champion.
 He also competed in PRIDE FC, Shooto and Rumble on the Rock.
Donald Anthony Cerrone ( ; born March 29, 1983) is an American professional mixed martial artist and former professional kickboxer currently competing in the UFC's Lightweight and Welterweight divisions.
 He is ranked #6 in the official UFC Welterweight rankings tied with fellow Welterweight contender Neil Magny.
 A professional competitor since 2006, Cerrone has also formerly competed for the WEC.
 Cerrone currently holds the record for most post-fight bonuses (Fight/Performance of the Night, Knockout/Submissions of the Night) in UFC/WEC history with 18.
 He is also known as the "busiest" fighter in the UFC, due to consistently having at least four fights per year since 2013.
WEC 38: Varner vs. Cerrone was a mixed martial arts event held by World Extreme Cagefighting on January 25, 2009.
 It aired live on the Versus Network.
 In the main event, WEC Lightweight Champion Jamie Varner defended his title against undefeated top contender Donald Cerrone.

Question: In the WEC 38, WEC Lightweight Champion Jamie Varner defended his title against a mixed martial artist born in this year?
Answer: 1983