On April 16, 1966, a 23-year-old Oscar Bonavena (19-2, 17 KOs) and Jose Giorgetti met in the ring for the 2nd time,.
Bonavena came in to the fight on a 1-fight losing streak with a 81% KO rate, and was fighting after a gap of 1 month and 4 days.
In the rematch, Oscar Bonavena defeated Jose Giorgetti via unanimous decision in the 10-round fight. Bonavena improves his record to 20-2
On July 23, 1965, a 22-year-old Oscar Bonavena (12-1, 11 KOs) and Eduardo Corletti met in the ring.
Bonavena came in to the fight on a 4-fight win streak with a 84% KO rate, and was fighting after a gap of 27 days.
Oscar Bonavena stopped Eduardo Corletti via KO in the 1st round. Bonavena improves his record to 13-1 (12 KOs)
On October 9, 1965, a 23-year-old Oscar Bonavena (15-1, 13 KOs) and Pablo Sagrispanti met in the ring.
Bonavena came in to the fight on a 7-fight win streak with a 81% KO rate, and was fighting after a gap of 1 month and 5 days.
Oscar Bonavena stopped Pablo Sagrispanti via TKO in the 1st round. Bonavena improves his record to 16-1 (14 KOs)
On May 9, 1970, a 27-year-old Oscar Bonavena (43-6-1, 34 KOs) and Manuel Ramos met in the ring.
Bonavena came in to the fight on a 2-fight win streak with a 68% KO rate, and was fighting after a gap of 15 days.
Oscar Bonavena stopped Manuel Ramos via KO in the 1st round. Bonavena improves his record to 44-6-1 (35 KOs)
On November 9, 1968, a 26-year-old Oscar Bonavena (37-4, 28 KOs) and Jim Fletcher met in the ring.
Bonavena came in to the fight on a 6-fight win streak with a 68% KO rate, and was fighting after a gap of 2 months and 2 days.
Oscar Bonavena stopped Jim Fletcher via KO in the 1st round. Bonavena improves his record to 38-4 (29 KOs)
On November 13, 1965, a 23-year-old Oscar Bonavena (17-1, 15 KOs) and Billy Daniels met in the ring.
Bonavena came in to the fight on a 9-fight win streak with a 83% KO rate, and was fighting after a gap of 22 days.
Oscar Bonavena stopped Billy Daniels via KO in the 1st round. Bonavena improves his record to 18-1 (16 KOs)
On May 29, 1964, a 21-year-old Oscar Bonavena (4-0, 4 KOs) and Byron Stoimenides met in the ring.
Bonavena came in to the fight on a 4-fight win streak with a 100% KO rate, and was fighting after a gap of 24 days.
Oscar Bonavena stopped Byron Stoimenides via KO in the 1st round. Bonavena improves his record to 5-0 (5 KOs)
On February 4, 1964, a 21-year-old Oscar Bonavena (1-0, 1 KO) and Everett Copeland met in the ring.
Bonavena came in to the fight on a 1-fight win streak with a 100% KO rate, and was fighting after a gap of 1 month and 1 day.
Oscar Bonavena stopped Everett Copeland via KO in the 1st round. Bonavena improves his record to 2-0 (2 KOs)
On December 10, 1968, a 26-year-old Oscar Bonavena (38-4, 29 KOs) and a 24-year-old American boxer Joe Frazier (21-0, 19 KOs) met in the ring for the 2nd time, in a heavyweight bout.
Bonavena came in to the fight on a 7-fight win streak with a 69% KO rate, and was fighting after a gap of 1 month and 1 day. Frazier was on a 21-fight win streak with a 90% KO rate, and fighting after a layoff of 5 months and 16 days.
In the rematch, Joe Frazier defeated Oscar Bonavena via unanimous decision in the 15-round heavyweight fight. Frazier improves his record to 22-0, while Bonavena adds a loss to his record at 38-5.
On September 21, 1974, a 31-year-old Oscar Bonavena (53-9-1, 41 KOs) and Bob Mashburn met in the ring.
Bonavena came in to the fight on a 2-fight win streak with a 65% KO rate, and was fighting after a gap of 2 months and 8 days.
Oscar Bonavena stopped Bob Mashburn via KO in the 2nd round. Bonavena improves his record to 54-9-1 (42 KOs)