| Pro Record: | 4-1-0 (Win-Loss-Draw) |
| Team: | Purebred Guam |
| Age: | 39 |
| Sex: | Male |
| Height: | 6 Feet. 2 Inch(es). |
| Weight: | 255 lbs. |
| Out of: | Dededo, |
John Calvo's Professional Record
| Date | Result | Opponent | Event | Method | Round | Time | ||
|---|---|---|---|---|---|---|---|---|
| NSF | 01/14/2000 | Win | Jun Kitagawa | Shooto: R.E.A.D. 2000 Shooto(1) | Decision Unanimous Decision | 2 | ||
| NSF | 11/05/1999 | Win | Mark Huetson | Shooto : Super brawl 14 | TKO/RSC | 1 | 1:11 | |
| NSF | 04/25/1998 | Loss | Daniel Severn | Superbrawl 7 | Submission Punches | 1 | 3:37 | |
| NSF | 08/23/1997 | Win | Jesse Matilla | Superbrawl 5 | Submission Rear Naked Choke | 1 | 0:25 | |
| NSF | 08/23/1997 | Win | Christopher Allen | Superbrawl 5 | Submission Arm Bar | 1 | 1:40 |
| 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 |

