Tamura's 32 career wins include victories over mixed martial arts greats such as Jeremy Horn, Renzo Gracie, Ikuhisa Minowa, Nobuhiko Takada, Pat Miletich and held Frank Shamrock to a draw at a time when Shamrock was reigning UFC champion. However, in spite of his many accomplishments inside the arena of MMA, his record is somewhat marred by a preponderance of match-ups against top heavyweight and light-heavyweight competitors, including Antônio Rodrigo Nogueira, the 350-pound Bob Sapp and the former Olympic gold medalist Hidehiko Yoshida amongst others.