On December 19, 1998, a 29-year-old Hiroki Ioka (33-7-1, 17 KOs) and Masamori Tokuyama met in the ring.
Ioka came in to the fight on a 1-fight win streak with a 41% KO rate, and was fighting after a gap of 3 months and 16 days.
Hiroki Ioka lost to Masamori Tokuyama via TKO in the 5th round, and adds a loss to his record at 33-8-1.
On April 29, 1998, a 29-year-old Hiroki Ioka (32-6-1, 17 KOs) got a shot at the super-flyweight WBA title held by Satoshi Iida.
Ioka came in to the fight on a 2-fight win streak with a 43% KO rate, and was fighting after a gap of 2 months and 26 days.
Hiroki Ioka was defending his super-flyweight titles and, fighting for the super-flyweight WBA titles against Satoshi Iida and lost via majority decision in the 12-round super-flyweight fight, and adds a loss to his record at 32-7-1.
On February 25, 1997, a 28-year-old Hiroki Ioka (30-5-1, 16 KOs) got a shot at the flyweight WBA title held by José Bonilla.
Ioka came in to the fight on a 3-fight win streak with a 44% KO rate, and was fighting after a gap of 4 months and 7 days.
Hiroki Ioka was defending his flyweight titles and, fighting for the flyweight WBA titles against José Bonilla and lost via TKO in the 7th round, and adds a loss to his record at 30-6-1.
On October 17, 1995, a 26-year-old Hiroki Ioka (27-4-1, 14 KOs) got a shot at the flyweight WBA title held by Saen Sor Ploenchit.
Ioka came in to the fight on a 5-fight win streak with a 43% KO rate, and was fighting after a gap of 5 months and 8 days.
Hiroki Ioka was defending his flyweight titles and, fighting for the flyweight WBA titles against Saen Sor Ploenchit and lost via TKO in the 10th round, and adds a loss to his record at 27-5-1.
On June 21, 1993, a 24-year-old Hiroki Ioka (22-3-1, 10 KOs) got a shot at the flyweight WBA title held by David Griman.
Ioka came in to the fight on a 1-fight win streak with a 38% KO rate, and was fighting after a gap of 4 months and 23 days.
Hiroki Ioka was defending his flyweight titles and, fighting for the flyweight WBA titles against David Griman and lost via TKO in the 8th round, and adds a loss to his record at 22-4-1.
On November 18, 1992, Hiroki Ioka and Yuh Myung-Woo met again in a rematch.
Ioka came in to the fight on a 10-fight win streak with a 37% KO rate, and was fighting after a gap of 5 months and 3 days. Myung-woo was on a -1-fight win streak with a 37% KO rate, and fighting after a layoff of 11 months and 1 day.
Yuh Myung-woo defeated Hiroki Ioka via majority decision in the rematch and wins the WBA title. Myung-woo improves his record to 37-1, while Ioka adds a loss to his record at 21-3-1.
On June 10, 1989, Hiroki Ioka and Napa Kiatwanchai met again in a rematch.
Ioka came in to the fight on a 1-fight win streak with a 53% KO rate, and was fighting after a gap of 4 months and 2 days.
Hiroki Ioka was defending his strawweight titles and, fighting for the strawweight WBC titles against Napa Kiatwanchai and lost via TKO in the 11th round, and adds a loss to his record at 11-2-1.
On November 13, 1988, Hiroki Ioka and Napa Kiatwanchai met again in an immediate rematch.
Ioka came in to the fight after a draw in his last fight with a 54% KO rate, and was fighting after a gap of 5 months and 8 days.
Hiroki Ioka was defending his strawweight WBC titles against Napa Kiatwanchai and lost via majority decision in the 12-round strawweight fight, and adds a loss to his record at 10-1-1.