How old was Jake O'Brien in…

Jake O'Brien

Bio: Jacob Allen O'Brien is a retired American professional mixed martial artist who most recently competed in the Heavyweight division. A professional competitor from 2005 until 2012, he fought for the UFC, WEC, and DREAM

Born: Tue, Sep 25 1984

Birthplace: Indianapolis, Indiana, USA

Jake O'Brien is 40 years old

Acting Roles

Crew Roles

Movies (Acting Roles)

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UFC 100: Lesnar vs. Mir 2

Jake O'Brien was 24 in UFC 100: Lesnar vs. Mir 2 as 'Self'.

Movie Released: Sat, Jul 11 2009

UFC 94: St-Pierre vs. Penn 2

Jake O'Brien was 24 in UFC 94: St-Pierre vs. Penn 2 as 'Self'.

Movie Released: Sat, Jan 31 2009

UFC Fight Night 14: Silva vs. Irvin

Jake O'Brien was 23 in UFC Fight Night 14: Silva vs. Irvin as 'Self'.

Movie Released: Sat, Jul 19 2008

UFC 82: Pride of a Champion

Jake O'Brien was 23 in UFC 82: Pride of a Champion as 'Self'.

Movie Released: Sat, Mar 01 2008

UFC Fight Night 8: Evans vs. Salmon

Jake O'Brien was 22 in UFC Fight Night 8: Evans vs. Salmon as 'Self'.

Movie Released: Thu, Jan 25 2007

UFC 65: Bad Intentions

Jake O'Brien was 22 in UFC 65: Bad Intentions as 'Self'.

Movie Released: Sat, Nov 18 2006

UFC Fight Night 6: Sanchez vs. Parisyan

Jake O'Brien was 21 in UFC Fight Night 6: Sanchez vs. Parisyan as 'Self'.

Movie Released: Thu, Aug 17 2006

WEC 19: Undisputed

Jake O'Brien was 21 in WEC 19: Undisputed as 'Self'.

Movie Released: Fri, Mar 17 2006

TV Shows (Acting Roles)

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Ages in TV shows are based off the first air date and may not be accurate. View individual episode details for accurate ages