On December 17, 1991, a 22-year-old Hiroki Ioka (18-2-1, 9 KOs) got a shot at the WBA light-flyweight title held by 27-year-old South Korean boxer Yuh Myung-Woo (36-0, 14 KOs).
Ioka came in to the fight on a 7-fight win streak with a 42% KO rate, and was fighting after a gap of 5 months and 20 days. Myung-woo was on a 36-fight win streak with a 38% KO rate, and fighting after a layoff of 7 months and 19 days.
Hiroki Ioka defeated Yuh Myung-Woo via split decision and wins the WBA title. Ioka improves his record to 19-2-1, while Myung-woo adds a loss to his record at 36-1.
On January 31, 1988, the 19-year-old WBC strawweight world champion, Hiroki Ioka (9-0, 5 KOs), faced a 21-year-old South Korean boxer Kyung-Yung Lee (11-0, 4 KOs), in a title defense fight.
Ioka came in to the fight on a 9-fight win streak with a 55% KO rate, and was fighting after a gap of 3 months and 13 days. Lee was on a 11-fight win streak with a 36% KO rate, and fighting after a layoff of 7 months and 17 days.
Hiroki Ioka stopped Kyung-Yung Lee via TKO in the final round of the 12-round world-title fight, and successfully defended his WBC strawweight title. Ioka improves his record to 10-0 (6 KOs), while Lee adds a loss to his record at 11-1.
On June 15, 1992, the 23-year-old WBA light-flyweight world champion, Hiroki Ioka (20-2-1, 9 KOs), faced Kim Bong-Jun, in a title defense fight.
Ioka came in to the fight on a 9-fight win streak with a 39% KO rate, and was fighting after a gap of 2 months and 15 days.
Hiroki Ioka defeated Kim Bong-Jun via unanimous decision and successfully defended his WBA light-flyweight title. Ioka improves his record to 21-2-1
On March 31, 1992, the 23-year-old WBA light-flyweight world champion, Hiroki Ioka (19-2-1, 9 KOs), faced Noel Tunacao, in a title defense fight.
Ioka came in to the fight on a 8-fight win streak with a 40% KO rate, and was fighting after a gap of 3 months and 14 days.
Hiroki Ioka defeated Noel Tunacao via unanimous decision and successfully defended his WBA light-flyweight title. Ioka improves his record to 20-2-1
On October 18, 1987, an 18-year-old Hiroki Ioka (8-0, 5 KOs) got a shot at the WBC strawweight title held by Mai Thomburifarm.
Ioka came in to the fight on a 8-fight win streak with a 62% KO rate, and was fighting after a gap of 3 months and 10 days.
Hiroki Ioka defeated Mai Thomburifarm via unanimous decision and wins the WBC title — in his first world-title fight. Ioka improves his record to 9-0
On February 22, 1987, an 18-year-old Hiroki Ioka (5-0, 4 KOs) and Hisashi Nakatomi met in the ring.
Ioka came in to the fight on a 5-fight win streak with a 80% KO rate, and was fighting after a gap of 4 months and 15 days.
Hiroki Ioka stopped Hisashi Nakatomi via TKO in the 1st round. Ioka improves his record to 6-0 (5 KOs)
On March 31, 1996, a 27-year-old Hiroki Ioka (27-5-1, 14 KOs) and Joel Nice met in the ring.
Ioka came in to the fight on a 1-fight losing streak with a 42% KO rate, and was fighting after a gap of 5 months and 14 days.
Hiroki Ioka stopped Joel Nice via KO in the 2nd round. Ioka improves his record to 28-5-1 (15 KOs)
On January 29, 1993, a 24-year-old Hiroki Ioka (21-3-1, 9 KOs) and Ronnie Romero met in the ring.
Ioka came in to the fight on a 1-fight losing streak with a 36% KO rate, and was fighting after a gap of 2 months and 11 days.
Hiroki Ioka stopped Ronnie Romero via KO in the 2nd round. Ioka improves his record to 22-3-1 (10 KOs)
On February 8, 1989, a 20-year-old Hiroki Ioka (10-1-1, 6 KOs) and Hidekazu Kakehashi met in the ring.
Ioka came in to the fight on a 1-fight losing streak with a 50% KO rate, and was fighting after a gap of 2 months and 26 days.
Hiroki Ioka stopped Hidekazu Kakehashi via KO in the 2nd round. Ioka improves his record to 11-1-1 (7 KOs)
On June 5, 1988, the 19-year-old WBC strawweight world champion, Hiroki Ioka (10-0, 6 KOs), faced Napa Kiatwanchai, in a title defense fight.
Ioka came in to the fight on a 10-fight win streak with a 60% KO rate, and was fighting after a gap of 4 months and 5 days.
The fight ended in a points decision draw and both the fighters added a draw to their respective records — Ioka is now 10-0-1.