
Person
Jake O'Brien
- Specialty
- Acting
- Birth
- September 25, 1984 · 42 years
- Origin
- Indianapolis, Indiana, USA
Technical Alias
Irish
Professional Trajectory
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.








