He has made MMA headlines when he defeated Takeshi Inoue in 2007, which won him the title of Shooto lightweight champion.
He has also participated in GCM and MARS events, achieving a TKO over Masaomi Saito in the former, and a first round submission over Ian Loveland in the latter.
Although Akitoshi had a reputation of being one of the world's best in his weight class,[3] he lost to former IFL featherweight champion Wagnney Fabiano, for whom it was also his WEC debut.
[6] Tamura competed in a Lethwei tournament on July 10 & 11, 2004 at the Thuwunna National Indoor Stadium in Yangon, Myanmar against Aye Bo Sein.
[8] Tamura knocked out local fighter Aya Bo Sein in the fourth round[9] becoming the first foreigner to beat a Lethwei practitioner in an official match[2] and received a challenge fight belt that was created specifically for the event.