Seiji Otsuka
| First Name : | Seiji |
| Last name : | Otsuka |
| Record : | 2 - 4 - 0 (Wins - Losses - Draws) |
| Wins : | 2 Decision (Unanimous) (100%) |
| Losses : |
3 Decision (Unanimous) (75%) 1 Draw (25%) |
| Match Stats | ||||||
| Result | Opponent | Method | Event Title | Date | Round | Time |
| Lost | Takeya Mizugaki | Decision (Unanimous) | GCM - Cage Force 5 | Dec 1, 2007 | 2 | 5:00 Sec |
| Lost | Zach Rapadas | Decision (Unanimous) | Kokoro - Kill Or Be Killed | Aug 15, 2006 | 2 | 5:00 Sec |
| Lost | Kenji Osawa | Decision (Unanimous) | Shooto - Wanna Shooto 2004 | Nov 12, 2004 | 2 | 5:00 Sec |
| Win | Luciano Azevedo | Decision (Unanimous) | Shooto - 7/13 in Korakuen Hall | Jul 13, 2003 | 2 | 5:00 Sec |
| Lost | Hiroshi Umemura | Draw | Shooto - GIG East 7 | Nov 26, 2001 | 2 | 5:00 Sec |
| Win | Yoshihiro Fujita | Decision (Unanimous) | Shooto - GIG East 2 | May 22, 2001 | 2 | 5:00 Sec |