Riku Masuda has one loss against one opponent on his boxing record. For a list of Masuda's best fights, refer to "Best fights of Riku Masuda".
On August 30, 2023 Riku Masuda faced off against Seiya Tsutsumi in a bantamweight bout at age 25. He was coming in with a record of 3-1 (3), and Tsutsumi was 27 years old and with a record of 8-0-2 (7). Masuda lost the fight via 10-round unanimous decision.
