Here is a list of Wajima's best fights. For a list of Wajima's losses, refer to "Koichi Wajima Losses".
On January 21, 1975 Koichi Wajima fought Oscar Albarado in a super-welterweight world-title fight for Albarado's WBA, WBC and The Ring titles. Wajima was 31 years old and with a record of 30-3-1 (24), and Albarado was 26 years old and with a record of 50-6-1 (38). Wajima won the fight via 15-round unanimous decision and is crowned the new super-welterweight world champion.
On May 7, 1972 Koichi Wajima met Domenico Tiberia in a super-welterweight (WBA and WBC) world-title defense fight. Wajima was 29 years old and with a record of 25-2 (22). Wajima stopped Domenico Tiberia via 1st-round KO and successfully defended his titles.
On May 28, 1971 Koichi Wajima faced off against Tetsuo Hoshino in a super-welterweight bout at age 28. He was coming in with a record of 22-2 (20). Wajima stopped Tetsuo Hoshino via KO.