On February 9, 1974, the 31-year-old undisputed middleweight world champion, Carlos Monzón (81-3-9, 55 KOs), faced a 33-year-old Mexican boxer José Nápoles (77-5, 52 KOs) in an undisputed title defense fight.
Monzón came in to the fight on a 25-fight win streak with a 59% KO rate, and was fighting after a gap of 4 months and 11 days. Nápoles was on a 12-fight win streak with a 63% KO rate, and fighting after a layoff of 4 months and 18 days.
The challenger refused to continue the fight in the 7th round, and Carlos Monzón is crowned the new middleweight world champion. Monzón improves his record to 82-3-9 (56 KOs), while Nápoles adds a loss to his record at 77-6.
On June 26, 1976, the 33-year-old WBA and The Ring middleweight champion, Carlos Monzón (85-3-9, 59 KOs), and the 30-year-old WBC middleweight champion Rodrigo Valdéz (57-4-2, 38 KOs) faced each other for the undisputed world championpionship.
Monzón came in to the fight on a 29-fight win streak with a 60% KO rate, and was fighting after a gap of 6 months and 13 days. Valdez was on a 27-fight win streak with a 60% KO rate, and fighting after a layoff of 2 months and 29 days.
Carlos Monzón defeated Rodrigo Valdéz via unanimous decision and wins the WBA, The Ring, and WBC middleweight world champion — and becomes the undisputed middleweight world champion. Monzón improves his record to 86-3-9, while Valdez adds a loss to his record at 57-5-2.
On July 30, 1977, the 34-year-old undisputed middleweight world champion, Carlos Monzón (86-3-9, 59 KOs), faced a 31-year-old Colombian boxer Rodrigo Valdéz (59-5-2, 40 KOs) in an undisputed title defense fight.
Monzón came in to the fight on a 30-fight win streak with a 60% KO rate, and was fighting after a gap of 1 year, 1 month, and 4 days. Valdez was on a 2-fight win streak with a 60% KO rate, and fighting after a layoff of 4 months and 11 days.
Carlos Monzón defeated Rodrigo Valdéz via unanimous decision in the rematch and successfully defended his WBA, WBC, and The Ring middleweight titles. Monzón improves his record to 87-3-9, while Valdez adds a loss to his record at 59-6-2.
On March 4, 1972, the 29-year-old undisputed middleweight world champion, Carlos Monzón (74-3-9, 51 KOs), faced a 32-year-old American boxer Denny Moyer (83-22-4, 23 KOs) in an undisputed title defense fight.
Monzón came in to the fight on a 18-fight win streak with a 59% KO rate, and was fighting after a gap of 3 months. Moyer was on a 11-fight win streak with a 21% KO rate, and fighting after a layoff of 18 days.
Carlos Monzón stopped Denny Moyer via TKO in the 5th round of the 15-round world-title fight, and successfully defended his WBA, WBC, and The Ring middleweight titles. Monzón improves his record to 75-3-9 (52 KOs), while Moyer adds a loss to his record at 83-23-4.
On August 19, 1972, the 30-year-old undisputed middleweight world champion, Carlos Monzón (76-3-9, 53 KOs), faced a undefined Tom Bogs undefined in an undisputed title defense fight.
Monzón came in to the fight on a 20-fight win streak with a 60% KO rate, and was fighting after a gap of 2 months and 2 days.
Carlos Monzón stopped Tom Bogs via TKO in the 5th round of the 15-round world-title fight, and successfully defended his WBA, WBC, and The Ring middleweight titles. Monzón improves his record to 77-3-9 (54 KOs)
On October 5, 1974, the 32-year-old WBA and The Ring middleweight world champion, Carlos Monzón (82-3-9, 56 KOs), faced Tony Mundine, in a title defense fight.
Monzón came in to the fight on a 26-fight win streak with a 59% KO rate, and was fighting after a gap of 7 months and 26 days.
Carlos Monzón stopped Tony Mundine via KO in the 7th round of the 15-round world-title fight, and successfully defended his WBA and The Ring middleweight titles. Monzón improves his record to 83-3-9 (57 KOs)
On May 8, 1971, the 28-year-old undisputed middleweight world champion, Carlos Monzón (71-3-9, 48 KOs), faced a 33-year-old Italian boxer Nino Benvenuti (82-6-1, 35 KOs) in an undisputed title defense fight.
Monzón came in to the fight on a 15-fight win streak with a 57% KO rate, and was fighting after a gap of 2 months and 2 days. Benvenuti was on a -2-fight win streak with a 39% KO rate, and fighting after a layoff of 1 month and 21 days.
Carlos Monzón made easy work of Nino Benvenuti in the rematch, stopping the challenger via TKO in the 3rd. Monzón improves his record to 72-3-9 (49 KOs), while Benvenuti adds a loss to his record at 82-7-1.
On November 7, 1970, a 28-year-old Carlos Monzón (67-3-9, 44 KOs) got a shot at the undisputed middleweight championship held by 32-year-old Nino Benvenuti (82-4-1, 35 KOs).
Monzón came in to the fight on a 11-fight win streak with a 55% KO rate, and was fighting after a gap of 1 month and 19 days. Benvenuti was on a 2-fight win streak with a 40% KO rate, and fighting after a layoff of 1 month and 26 days.
Carlos Monzón stopped the champion via TKO in the 12th round, winning the first world titles of his career, and is crowned the new WBA, WBC, and The Ring middleweight champion. Monzón improves his record to 68-3-9 (45 KOs), while Benvenuti adds a loss to his record at 82-5-1.
On December 13, 1975, the 33-year-old WBA and The Ring middleweight world champion, Carlos Monzón (84-3-9, 58 KOs), faced Gratien Tonna, in a title defense fight.
Monzón came in to the fight on a 28-fight win streak with a 60% KO rate, and was fighting after a gap of 5 months and 13 days.
Carlos Monzón stopped Gratien Tonna via KO in the 5th round of the 15-round world-title fight, and successfully defended his WBA and The Ring middleweight titles. Monzón improves his record to 85-3-9 (59 KOs)
On June 30, 1975, the 32-year-old WBA and The Ring middleweight world champion, Carlos Monzón (83-3-9, 57 KOs), faced Tony Licata, in a title defense fight.
Monzón came in to the fight on a 27-fight win streak with a 60% KO rate, and was fighting after a gap of 8 months and 25 days.
Carlos Monzón stopped Tony Licata via TKO in the 10th round of the 15-round world-title fight, and successfully defended his WBA and The Ring middleweight titles. Monzón improves his record to 84-3-9 (58 KOs)