May 2, 1986
|Height||5 ft 5 in (1.65 m)|
|Weight||143 lb (65 kg; 10.2 st)|
|Fighting out of||Ushiku, Ibaraki, Japan|
|Mixed martial arts record|
|Mixed martial arts record from Sherdog|
Mixed martial arts career
Osawa is a successful wrestler. Amongst his successes was his participation in the 8th World University Wrestling Championship in Greece where he won gold in the 60 kg division. He also won the All-Japan Freestyle Wrestling Championship 60 kg division in 2007, which gave him his entry into Sengoku.
In June 2010, Osawa faced Katsuya Toida at Sengoku 13. In the third round, the bout was ended after accidental kicks to the groin by Toida and ruled a "no contest"
Mixed martial arts record
|Professional record breakdown|
|20 matches||11 wins||5 losses|
|Win||11–5–3 (1)||Satoshi Murata||TKO (doctor stoppage)||Grachan 14 - Mach Matsuri||July 20, 2014||1||3:34||Tokyo, Japan|
|Draw||10–5–3 (1)||Fumiya Sasaki||Draw (majority)||Shooto - 4th Round 2014||May 5, 2014||2||5:00||Tokyo, Japan|
|Win||10–5–2 (1)||Kazuhiro Ito||Decision (unanimous)||Shooto - 1st Round 2014||January 13, 2014||3||5:00||Tokyo, Japan|
|Loss||9–5–2 (1)||Akiyo Nishiura||Decision (split)||Vale Tudo Japan - VTJ 3rd||October 5, 2013||3||5:00||Tokyo, Japan|
|Win||9–4–2 (1)||Kazuya Satomoto||TKO (doctor stoppage)||Shooto - 1st Round 2013||January 20, 2013||2||3:44||Tokyo, Japan|
|Loss||8–4–2 (1)||Yoshifumi Nakamura||Decision (majority)||Shooto: Gig Tokyo 12||October 27, 2012||3||5:00||Tokyo, Japan|
|Win||8–3–2 (1)||Hiroyuki Abe||TKO (punches)||Shooto: 10th Round||September 30, 2012||1||4:12||Tokyo, Japan|
|Loss||7–3–2 (1)||Yusuke Yachi||Decision (unanimous)||Shooto: 3rd Round||March 10, 2012||3||5:00||Tokyo, Japan|
|Win||7–2–2 (1)||Young Sam Jung||TKO (punches)||Rings: Battle Genesis Vol. 9||January 22, 2012||2||4:34||Tokyo, Japan|
|Loss||6–2–2 (1)||Akitoshi Tamura||Decision (unanimous)||Shooto: Shooto the Shoot 2011||November 5, 2011||3||5:00||Tokyo, Japan|
|Draw||6–1–2 (1)||Shunichi Shimizu||Draw||Zst: Battle Hazard 5||July 17, 2011||2||5:00||Tokyo, Japan|
|Draw||6–1–1 (1)||Tomonari Kanomata||Draw (unanimous)||Pancrase: Passion Tour 10||November 3, 2010||3||5:00||Tokyo, Japan|
|Win||6–1 (1)||Masaomi Saito||TKO (punches)||Pancrase: Passion Tour 9||October 3, 2010||1||1:42||Tokyo, Japan|
|NC||5–1 (1)||Katsuya Toida||No Contest (accidental kicks to the groin)||Sengoku 13||June 20, 2010||3||1:35||Tokyo, Japan|
|Win||5–1||Kyung Ho Kang||Decision (unanimous)||Sengoku 12||March 7, 2010||3||5:00||Tokyo, Japan|
|Loss||4–1||Ronnie Mann||Decision (unanimous)||Sengoku 11||November 7, 2009||3||5:00||Tokyo, Japan|
|Win||4–0||Ki Hyun Kim||Decision (unanimous)||Sengoku 10||September 23, 2009||2||5:00||Saitama, Japan|
|Win||3–0||Toru Harai||TKO (punches)||Sengoku 9||August 2, 2009||1||4:24||Saitama, Japan|
|Win||2–0||Kota Ishibashi||Decision (unanimous)||Sengoku 8||May 2, 2009||2||5:00||Tokyo, Japan|
|Win||1–0||Hideo Matsui||Decision (unanimous)||Pancrase: Changing Tour 2||April 5, 2009||2||5:00||Tokyo, Japan|
- "SRC XIII Preview: Marlon Sandro". bloodyelbow.com. June 18, 2010.
- "Sengoku: Omigawa continues unlikely run, Hioki, Kanehara, Sandro advance". mmajunkie.com. May 2, 2009.
- "Featherweight GP winner crowned, lightweight title claimed at "Sengoku Ninth Battle"". mmajunkie.com. August 2, 2009.
- "Sengoku 10th Battle results: Hiroshi Izumi's debut spoiled, Antonio Silva wins again". sherdog.com. September 23, 2009.
- "Omigawa disagrees with upset of Hioki, Khalidov stuns Santiago at "Sengoku 11th Battle"". sherdog.com. November 7, 2009.
- "Pictures: Sengoku 12". sherdog.com. March 9, 2010.
- "Shigeki Osawa". sherdog.com. Retrieved September 6, 2010.