On March 13, 2025, a 31-year-old Hiroto Kyoguchi (19-2, 12 KOs) got a shot at the flyweight WBO title held by 26-year-old American boxer Anthony Olascuaga (8-1, 6 KOs).
Kyoguchi came in to the fight on a 1-fight win streak with a 57% KO rate, and was fighting after a gap of 5 months. Olascuaga was on a 3-fight win streak with a 66% KO rate, and fighting after a layoff of 4 months and 27 days.
Anthony Olascuaga defeated Hiroto Kyoguchi via unanimous decision and successfully defended his WBO flyweight title. Olascuaga improves his record to 9-1, while Kyoguchi adds a loss to his record at 19-3.
On May 11, 2024, a 30-year-old Hiroto Kyoguchi (18-1, 12 KOs) and Vince Paras met in the ring for the 2nd time,.
Kyoguchi came in to the fight on a 2-fight win streak with a 63% KO rate, and was fighting after a gap of 7 months and 19 days.
Hiroto Kyoguchi lost to Vince Paras via unanimous decision in the 10-round fight, and adds a loss to his record at 18-2.
On November 1, 2022, the 28-year-old WBA (Super) and The Ring light-flyweight champion, Hiroto Kyoguchi (16-0, 11 KOs), and the 30-year-old WBC light-flyweight champion Kenshiro Teraji (19-1, 11 KOs) met in a title-unification fight.
Kyoguchi came in to the fight on a 16-fight win streak with a 68% KO rate, and was fighting after a gap of 4 months and 22 days. Teraji was on a 1-fight win streak with a 55% KO rate, and fighting after a layoff of 7 months and 13 days.
Kenshiro Teraji stopped Hiroto Kyoguchi via TKO in the 7th round of the 12-round world-title fight and unified the WBA (Super), The Ring, and WBC light-flyweight titles. Teraji improves his record to 20-1 (12 KOs), while Kyoguchi adds a loss to his record at 16-1.