[4] She managed to make it to the finals of a Smackgirl grappling tournament on May 16, 2004 (2004-05-16) where she lost to Yasuko Mogi.
[10] Tamada made her professional debut in MMA with a split decision victory against Maho Muranami.
[18][19] On May 26, 2012 (2012-05-26), Tamada faced Naho Sugiyama in a non-title rematch at Jewels 19th Ring in Osaka, Japan.
[21] Tamada faced Naoko Omuro for a third time at Jewels 20th Ring on July 21, 2012 (2012-07-21).
[28][29] Tamada competed against Yukiko Seki for the third time at Deep Jewels 1 on August 31, 2013 (2013-08-31).