Hiroto Kyoguchi has three losses against three opponents on his boxing record. For a list of Kyoguchi's best fights, refer to "Best fights of Hiroto Kyoguchi".
On March 13, 2025 Hiroto Kyoguchi fought Anthony Olascuaga in a flyweight world-title fight for Olascuaga's WBO title. Kyoguchi was 31 years old and with a record of 19-3 (12), and Olascuaga was 26 years old and with a record of 8-1 (6). Kyoguchi lost the fight via 12-round unanimous decision.
On May 11, 2024 Hiroto Kyoguchi faced off against Vince Paras at age 30. He was coming in with a record of 18-2 (12). Kyoguchi lost the fight via 10-round unanimous decision.
On November 1, 2022 Hiroto Kyoguchi, the WBA (Super) and The Ring champion, met Kenshiro Teraji, the WBC champion, in a light-flyweight world-title unification fight. Kyoguchi was 28 years old and with a record of 16-1 (11), and Teraji was 30 years old and with a record of 19-1 (11). Kyoguchi lost the fight via 7th-round TKO and lost his titles.
