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Seth Dikun (born August 5, 1980) is an American professional mixed martial arts fighter. He currently fights in WEC's featherweight division. His debut for WEC was a unanimous-decision-loss to Charlie Valencia at WEC 38. He defeated Rolando Perez at WEC 41, earning "Submission of the Night" honors. Dikun would go on to earn "Submission of the Year" honors for his inverted triangle victory over Perez at the World Mixed Martial Arts Awards 2009.