| Pro Record: | 8-8-3 (Win-Loss-Draw) |
| Team: | Paraestra Omiya |
| Age: | 34 |
| Sex: | Male |
| Height: | 5 Feet. 3 Inch(es). |
| Weight: | 132 lbs. |
| Out of: | Omiya, |
Seiji Otsuka's Professional Record
| Date | Result | Opponent | Event | Method | Round | Time | ||
|---|---|---|---|---|---|---|---|---|
| NSF | 06/21/2008 | Win | Ayumu Shioda | Shooto: Shooting Disco 5 | KO Knee | 2 | 0:59 | |
| NSF | 12/01/2007 | Loss | Takeya Mizugaki | Greatest Common Multiple: Cage Force 5 | Decision Unanimous Decision | 2 | ||
| NSF | 09/23/2007 | Loss | Toru Harai | DEEP: Club DEEP - Yamaguchi | Decision Unanimous Decision | 2 | ||
| NSF | 07/20/2007 | Draw | Junya Kudo | Shooto: Battle Mix Tokyo 04 | 0 | 0:00 | ||
| NSF | 06/16/2007 | Win | Taro Shimazaki | DEEP: DEEP X | Decision Split Decision | 2 | ||
| NSF | 10/04/2006 | Loss | Tomohiko Hori | Greatest Common Multiple: Mars - Bodog Fight | Decision Unanimous Decision | 2 | ||
| NSF | 08/15/2006 | Loss | Zach Rapadas | Kokoro: Kill or be Killed | Decision Unanimous Decision | 2 | ||
| NSF | 07/08/2006 | Draw | Motomare Takahashi | Deep: Club Deep | 2 | |||
| NSF | 03/24/2006 | Win | Takamaro Watari | Professional Shooto JAPAN 2006 | Decision Unanimous Decision | 2 | ||
| NSF | 07/14/2005 | Loss | Takahiro Hosoi | Shooto: Shooter's Summer | Decision Unanimous Decision | 2 | ||
| NSF | 02/06/2005 | Loss | So Tazawa | Professional Shooto JAPAN 2005 | TKO/RSC | 2 | 0:20 | |
| NSF | 11/12/2004 | Loss | Kenji Osawa | Shooto : Wanna Shooto 2004 | Decision Unanimous Decision | 2 | ||
| NSF | 12/27/2003 | Win | Yoshinobu Ohta | Greatest Common Multiple: Demolition 12 | Submission Arm Bar | 1 | 1:40 | |
| NSF | 07/13/2003 | Win | Luciano Azevedo | Shooto: Professional Shooto JAPAN 2003 | Decision Unanimous Decision | 2 | ||
| NSF | 05/01/2003 | Win | Takahiro Sanehara | Greatest Common Multiple: Demolition 7 | Decision Majority Decision | 2 | ||
| NSF | 03/15/2002 | Loss | Noriyuki Yokoyama | Shooto: Professional Shooto JAPAN 2002 | Decision Unanimous Decision | 2 | ||
| NSF | 11/26/2001 | Draw | Hiroshi Umemura | Shooto: Gig East Vol.7 | 2 | |||
| NSF | 06/30/2001 | Win | Katsuhisa Akasaki | Shooto: To The Top Vol. 5 | Decision Split Decision | 2 | ||
| NSF | 05/22/2001 | Win | Yoshihiro Fujita | Shooto: GIG East 2 | Decision Unanimous Decision | 2 |
 : |
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 |
