Jake O'Brien
Date of Birth:
Sep 25, 1984
Place of Birth:
Indianapolis, Indiana, USA
Date of Birth:
Sep 25, 1984
Place of Birth:
Indianapolis, Indiana, USA
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.