Jake O'Brien

Biography

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.

Known For

DREAM 15

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UFC Fight Night 8: Evans ...

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UFC 94: St-Pierre vs. Pen...

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UFC Fight Night 14: Silva...

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UFC 100: Lesnar vs. Mir 2

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UFC 82: Pride of a Champi...

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UFC 65: Bad Intentions

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UFC Fight Night 6: Sanche...

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WEC 19: Undisputed

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