Tsuyoshi Hamada has two losses against two opponents on his boxing record. For a list of Hamada's best fights, refer to "Best fights of Tsuyoshi Hamada".
On July 22, 1987 Tsuyoshi Hamada met Rene Arredondo in a super-lightweight (WBC) world-title defense fight. Hamada was 26 years old and with a record of 21-2 (19). Hamada lost the fight via 6th-round TKO and lost the title.
On October 23, 1979 Tsuyoshi Hamada faced off against Fusao Imai at age 18. He was coming in with a record of 2-1 (2). Hamada lost the fight via 4-round points decision.