Derrick Mehmen (born May 30, 1985) is an American professional mixed martial artist currently competing in the Heavyweight division for the Titan Fighting Championships.
[citation needed] Mehmen fought against Scott Barrett at World Series of Fighting 8: Gaethje vs. Patishnock on January 18, 2014.
Mehmen faced Dave Huckaba at World Series of Fighting 10: Branch vs. Taylor on June 21, 2014.
Mehmen faced Smealinho Rama for the inaugural WSOF Heavyweight Championship at World Series of Fighting 14: Ford vs. Shields on October 11, 2014.
Mehmen challenged Blagoy Ivanov for the WSOF Heavyweight Championship at World Series of Fighting 24: Fitch vs. Okami on October 17, 2015.