- Name: Brett O'Brien
- Pro MMA Record: 3-1-0 (Win-Loss-Draw)
- Nickname: N/A
- Current Streak: 2 Wins
- Age & Date of Birth: N/A
- Last Fight: July 14, 2012 in SNA
- Weight Class: Bantamweight | Last Weigh-In: N/A
- Affiliation: South Coast Submissions
- Height: N/A | Reach: N/A
- Career Disclosed Earnings: $0 USD
- Born: England
- Fighting out of: England
Regional Rankings Rankings FAQ
Brett O'Brien is ineligible for regional rankings due to inactivity.
Fighters must have at least one completed MMA bout in the past two years to be ranked.