Jake O'Brien is a 41-year-old mixed martial artist from United States with a professional record of 15-4-0.
Standing 6ft 3in tall, Jake O'Brien competes in the Lightweight division.
Jake O'Brien has 15 wins, 4 losses, and 0 draws in their professional career. Their wins include 7 knockouts/TKOs, 3 submissions, and 5 decisions.
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