On March 19, 1974, a 31-year-old Oscar Bonavena (51-8-1, 40 KOs) and a 33-year-old American boxer Ron Lyle (26-1-1, 19 KOs) met in the ring.
Bonavena came in to the fight on a 4-fight win streak with a 66% KO rate, and was fighting after a gap of 3 months and 27 days. Lyle was on a 0-fight win streak with a 67% KO rate, and fighting after a layoff of 4 months and 2 days.
Ron Lyle defeated Oscar Bonavena via unanimous decision in the 12-round fight. Lyle improves his record to 27-1-1, while Bonavena adds a loss to his record at 51-9-1.
On February 11, 1972, a 29-year-old Oscar Bonavena (47-7-1, 37 KOs) and a 37-year-old American boxer Floyd Patterson (53-7-1, 39 KOs) met in the ring.
Bonavena came in to the fight on a 1-fight win streak with a 67% KO rate, and was fighting after a gap of 4 months and 7 days. Patterson was on a 7-fight win streak with a 63% KO rate, and fighting after a layoff of 2 months and 19 days.
Floyd Patterson defeated Oscar Bonavena via unanimous decision in the 10-round fight. Patterson improves his record to 54-7-1, while Bonavena adds a loss to his record at 47-8-1.
On December 7, 1970, a 28-year-old Oscar Bonavena (46-6-1, 37 KOs) and a 28-year-old American boxer Muhammad Ali (30-0, 24 KOs) met in the ring.
Bonavena came in to the fight on a 5-fight win streak with a 69% KO rate, and was fighting after a gap of 1 month and 8 days. Ali was on a 30-fight win streak with a 80% KO rate, and fighting after a layoff of 1 month and 11 days.
Muhammad Ali stopped Oscar Bonavena via TKO in the 15th round. Ali improves his record to 31-0 (25 KOs), while Bonavena adds a loss to his record at 46-7-1.
On January 10, 1970, a 27-year-old Oscar Bonavena (41-5-1, 32 KOs) and Miguel Angel Paez met in the ring.
Bonavena came in to the fight on a 1-fight win streak with a 68% KO rate, and was fighting after a gap of 28 days.
Oscar Bonavena lost to Miguel Angel Paez via disqualification in the 10-round fight, and adds an loss to his record at 41-6-1.
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 December 2, 1967, a 25-year-old Oscar Bonavena (31-3, 25 KOs) and a 27-year-old American boxer Jimmy Ellis (24-5, 12 KOs) met in the ring.
Bonavena came in to the fight on a 10-fight win streak with a 73% KO rate, and was fighting after a gap of 2 months and 16 days. Ellis was on a 9-fight win streak with a 41% KO rate, and fighting after a layoff of 3 months and 27 days.
Jimmy Ellis defeated Oscar Bonavena via unanimous decision in the 12-round fight. Ellis improves his record to 25-5, while Bonavena adds a loss to his record at 31-4.
On September 21, 1966, a 23-year-old Oscar Bonavena (21-2, 17 KOs) and a 22-year-old American boxer Joe Frazier (11-0, 11 KOs) met in the ring.
Bonavena came in to the fight on a 2-fight win streak with a 73% KO rate, and was fighting after a gap of 2 months and 29 days. Frazier was on a 11-fight win streak with a 100% KO rate, and fighting after a layoff of 1 month and 27 days.
Joe Frazier defeated Oscar Bonavena via split decision in the 10-round fight. Frazier improves his record to 12-0, while Bonavena adds a loss to his record at 21-3.
On March 12, 1966, a 23-year-old Oscar Bonavena (19-1, 17 KOs) and Jose Giorgetti met in the ring.
Bonavena came in to the fight on a 11-fight win streak with a 85% KO rate, and was fighting after a gap of 1 month.
Oscar Bonavena lost to Jose Giorgetti via disqualification in the 10-round fight, and adds an loss to his record at 19-2.
On February 26, 1965, a 22-year-old Oscar Bonavena (8-0, 7 KOs) and a 33-year-old American boxer Zora Folley (68-7-4, 38 KOs) met in the ring.
Bonavena came in to the fight on a 8-fight win streak with a 87% KO rate, and was fighting after a gap of 2 months and 8 days. Folley was on a 1-fight win streak with a 48% KO rate, and fighting after a layoff of 3 months and 12 days.
Zora Folley defeated Oscar Bonavena via unanimous decision in the 10-round fight. Folley improves his record to 69-7-4, while Bonavena adds a loss to his record at 8-1.