On July 15, 1966, the 31-year-old undisputed flyweight world champion, Horacio Accavallo (69-1-6, 33 KOs), faced a 26-year-old Japanese boxer Hiroyuki Ebihara (52-2-1, 28 KOs) in an undisputed title defense fight.
Accavallo came in to the fight on a 42-fight win streak with a 43% KO rate, and was fighting after a gap of 2 months and 2 days. Ebihara was on a 14-fight win streak with a 50% KO rate, and fighting after a layoff of 2 months and 21 days.
Horacio Accavallo defeated Hiroyuki Ebihara via unanimous decision and successfully defended his WBA and WBC flyweight titles. Accavallo improves his record to 70-1-6, while Ebihara adds a loss to his record at 52-3-1.
On December 10, 1966, the 32-year-old WBA flyweight world champion, Horacio Accavallo (72-1-6, 34 KOs), faced Efren Torres, in a title defense fight.
Accavallo came in to the fight on a 45-fight win streak with a 43% KO rate, and was fighting after a gap of 2 months and 3 days.
Horacio Accavallo defeated Efren Torres via unanimous decision and successfully defended his WBA flyweight title. Accavallo improves his record to 73-1-6
On August 12, 1967, Horacio Accavallo and Hiroyuki Ebihara met again in a rematch.
Accavallo came in to the fight on a 1-fight win streak with a 41% KO rate, and was fighting after a gap of 1 month and 4 days. Ebihara was on a 3-fight win streak with a 49% KO rate, and fighting after a layoff of 1 month and 2 days.
Horacio Accavallo defeated Hiroyuki Ebihara via majority decision in the rematch and successfully defended his WBA flyweight title. Accavallo improves his record to 75-2-6, while Ebihara adds a loss to his record at 55-4-1.
On March 1, 1966, a 31-year-old Horacio Accavallo (66-1-6, 32 KOs) got a shot at the undisputed flyweight championship held by Katsuyoshi Takayama.
Accavallo came in to the fight on a 39-fight win streak with a 43% KO rate, and was fighting after a gap of 2 months and 12 days.
Horacio Accavallo defeated Katsuyoshi Takayama via split decision and wins the WBC and WBA flyweight world champion — and becomes the undisputed flyweight world champion — in his first world-title fight. Accavallo improves his record to 67-1-6
On August 7, 1965, a 30-year-old Horacio Accavallo (62-1-6, 29 KOs) and Salvatore Burruni met in the ring for the 3rd time,.
Accavallo came in to the fight on a 35-fight win streak with a 42% KO rate, and was fighting after a gap of 22 days.
In the rematch, Horacio Accavallo defeated Salvatore Burruni via unanimous decision in the 10-round fight. Accavallo improves his record to 63-1-6
On October 26, 1963, a 29-year-old Horacio Accavallo (47-1-6, 22 KOs) and Demetrio Carbajal met in the ring for the 2nd time, in a flyweight bout.
Accavallo came in to the fight on a 20-fight win streak with a 40% KO rate, and was fighting after a gap of 16 days.
In the rematch, Horacio Accavallo stopped Demetrio Carbajal via TKO in the 11th round. Accavallo improves his record to 48-1-6 (23 KOs)
On August 2, 1963, a 28-year-old Horacio Accavallo (43-1-6, 20 KOs) and Fidel Folch met in the ring for the 2nd time,.
Accavallo came in to the fight on a 16-fight win streak with a 40% KO rate, and was fighting after a gap of 20 days.
In the rematch, Horacio Accavallo stopped Fidel Folch via TKO in the 4th round. Accavallo improves his record to 44-1-6 (21 KOs)
On March 21, 1964, a 29-year-old Horacio Accavallo (50-1-6, 25 KOs) and Armando Mansilla met in the ring for the 3rd time,.
Accavallo came in to the fight on a 23-fight win streak with a 43% KO rate, and was fighting after a gap of 1 month and 14 days.
In the rematch, Horacio Accavallo stopped Armando Mansilla via TKO in the 5th round. Accavallo improves his record to 51-1-6 (26 KOs)
On May 24, 1963, a 28-year-old Horacio Accavallo (40-1-6, 19 KOs) and Fidel Folch met in the ring.
Accavallo came in to the fight on a 13-fight win streak with a 40% KO rate, and was fighting after a gap of 14 days.
Horacio Accavallo stopped Fidel Folch via TKO in the 5th round. Accavallo improves his record to 41-1-6 (20 KOs)
On September 7, 1960, a 25-year-old Horacio Accavallo (27-1-6, 17 KOs) and Julio Barrera met in the ring.
Accavallo came in to the fight after a draw in his last fight with a 50% KO rate, and was fighting after a gap of 2 months and 6 days.
Horacio Accavallo stopped Julio Barrera via KO in the 5th round. Accavallo improves his record to 28-1-6 (18 KOs)