On July 7, 2024, the 35-year-old WBA super-flyweight champion, Kazuto Ioka (31-2-1, 16 KOs), and the 32-year-old IBF super-flyweight champion Fernando Martinez (16-0, 9 KOs) met in a title-unification fight.
Ioka came in to the fight on a 2-fight win streak with a 47% KO rate, and was fighting after a gap of 6 months and 7 days. Martínez was on a 16-fight win streak with a 56% KO rate, and fighting after a layoff of 1 year and 13 days.
Fernando Martínez defeated Kazuto Ioka via unanimous decision and unifies the WBA and IBF super-flyweight titles. Martínez improves his record to 17-0, while Ioka adds a loss to his record at 31-3-1.
On December 31, 2018, 29-year-old Kazuto Ioka (23-1, 13 KOs) and 36-year-old Donnie Nietes (41-1-5, 23 KOs) fought for the vacant WBO super-flyweight title.
Ioka came in to the fight on a 9-fight win streak with a 54% KO rate, and was fighting after a gap of 3 months and 23 days. Nietes was on a 0-fight win streak with a 48% KO rate, and fighting after a layoff of 3 months and 23 days.
Donnie Nietes defeated Kazuto Ioka via split decision . Nietes improves his record to 42-1-5, while Ioka adds a loss to his record at 23-2.
On May 7, 2014, a 25-year-old Kazuto Ioka (14-0, 9 KOs) got a shot at the flyweight IBF title held by 34-year-old Thai boxer Amnat Ruenroeng (12-0, 5 KOs).
Ioka came in to the fight on a 14-fight win streak with a 64% KO rate, and was fighting after a gap of 4 months and 7 days. Ruenroeng was on a 12-fight win streak with a 41% KO rate, and fighting after a layoff of 3 months and 15 days.
Amnat Ruenroeng defeated Kazuto Ioka via split decision and successfully defended his IBF flyweight title. Ruenroeng improves his record to 13-0, while Ioka adds a loss to his record at 14-1.