About Brian Olsen
Born 1975. Brian Olsen is an American mixed martial arts fighter.
Brian Olsen (born 1975) is an American former mixed martial artist. A professional from 2004 until 2008, he was the last WEC Heavyweight Champion before it was abolished when Zuffa purchased the organization.
Mixed martial arts career World Extreme Cagefighting Olsen made his debut against Craig Zellner on March 17, 2005 at WEC 14: Vengeance. He defeated Zellner via TKO in the second round.
Olsen fought for the vacant WEC heavyweight title against Lavar Johnson on January 13, 2006 at WEC 18: Unfinished Business. He defeated Johnson via submission due to a knee injury and became the new heavyweight champion.
Olsen made a title defense against Mike Kyle on May 5, 2006 at WEC 20: Cinco de Mayhem. Kyle was disqualified after hitting Olsen with illegal strikes, for which he was placed on the national suspension list by CSAC.
Olsen remained as the last WEC heavyweight champion, because Zuffa abolished the heavyweight division from WEC after it was purchased.
Post-WEC Olsen fought twice for Canadian's promotion Ultimate Generation Combat. He defeated J.R. Alexander and Mike Marshalleck, both via TKO in the first round.
Olsen faced Fernando Rivera on May 9, 2008 at USFL: War in the Woods 3. He won via TKO early in the first round.
Championships and accomplishments World Extreme Cagefighting WEC Heavyweight Championship (One time; last) One successful title defense
Mixed martial arts record Win
Fernando Rivera TKO (punches) USFL: War in the Woods 3
Ledyard, Connecticut, United States Win
Mike Marshalleck TKO (strikes) Ultimate Generation Combat 17
Montreal, Quebec, Canada Win
J.R. Alexander TKO (strikes) Ultimate Generation Combat 16
Montreal, Quebec, Canada Win
Mike Kyle DQ (strikes after the bell) WEC 20: Cinco de Mayhem
Lemoore, California, United States Win
Lavar Johnson TKO (knee injury) WEC 18: Unfinished Business
Lemoore, California, United States Loss
Ibragim Magomedov KO (punch) Euphoria: USA vs. Russia
Atlantic City, New Jersey, United States Win
Glenn Sandull TKO (punches) Reality Fighting 8
Atlantic City, New Jersey, United States Won the vacant Reality Fighting Heavyweight Championship. Win
Craig Zellner TKO (punches) WEC 14: Vengeance
Lemoore, California, United States Win
Tyler Oleksak TKO (punches) Mass Destruction 18
Boston, Massachusetts, United States Win
Jed Tinlin Decision (split) ECFA: Halloween Throwdown
Taunton, Massachusetts, United States
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Important facts
People in Brian Olsen's life
Named in this biography and alive at the same time
Related people
Same field, nearest in time
Contemporaries
People whose lives overlapped Brian Olsen's
Frequently asked questions
Who is Brian Olsen?
American martial artist
When was Brian Olsen born?
Brian Olsen was born in 1975 in Enfield.
What is Brian Olsen's occupation?
Brian Olsen is a mixed martial arts fighter.
What nationality is Brian Olsen?
Brian Olsen is American.
Sources & further reading
Cite this page
APA: Biography.guide. (2026). Brian Olsen. https://biography.guide/brian-olsen/
MLA: "Brian Olsen." Biography.guide, https://biography.guide/brian-olsen/.
Chicago: "Brian Olsen." Biography.guide. https://biography.guide/brian-olsen/.
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