| Pro Record: | 1-2-0 (Win-Loss-Draw) |
| Team: | |
| Sex: | Male |
John Brennan's Professional Record
| Date | Result | Opponent | Event | Method | Round | Time | ||
|---|---|---|---|---|---|---|---|---|
| NSF | 07/10/1999 | Loss | Bill Cameron | Rage in the Cage 6 | Decision | 3 | ||
| NSF | 05/26/1999 | Loss | David Harris | Rage in the Cage 5 | Submission Strikes | 2 | 2:21 | |
| NSF | 04/07/1999 | Win | Larry Mintor | Rage in the Cage 4 | Submission Triangle Choke | 1 | 1:30 |
John Brennan's Amateur Record
| Date | Result | Opponent | Event | Method | Round | Time | ||
|---|---|---|---|---|---|---|---|---|
| NSF | 06/19/1999 | Loss | Steve Gomm | Idaho Summer Fight Series 1 | Submission |
 : |
Bout results verified by an official State, Tribal, Provincial, or Municipal Commission. |
| NSF: | Non Sanctioned Fight |
| * : | For a variety of reasons, including weight disparity and the demands of entertainment, Exhibition Bouts are held, in which the contest is unscripted and hard fought, but the results do not count on a fighter's Official Record. |
| NC: | Fight Declared No Contest |
