1984-09-25 Indianapolis, Indiana, USA
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.
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DREAM.15 | Self | 2010-07-10 |
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UFC 100: Lesnar vs. Mir 2 | Self | 2009-07-11 |
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UFC 94: St-Pierre vs. Penn 2 | Self | 2009-01-31 |
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UFC Fight Night 14: Silva vs. Irvin | Self | 2008-07-19 |
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UFC 82: Pride of a Champion | Self | 2008-03-01 |
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UFC Fight Night 8: Evans vs. Salmon | Self | 2007-01-25 |
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UFC 65: Bad Intentions | Self | 2006-11-18 |
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UFC Fight Night 6: Sanchez vs. Parisyan | Self | 2006-08-17 |
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WEC 19: Undisputed | Self | 2006-03-17 |
