On March 12, 1988, a 41-year-old Rubén Olivares (89-12-3, 79 KOs) and Ignacio Madrid met in the ring.
Olivares came in to the fight after a draw in his last fight with a 76% KO rate, and was fighting after a gap of 2 years and 16 days.
Rubén Olivares lost to Ignacio Madrid via KO in the 4th round, and adds an loss to his record at 89-13-3.
On November 24, 1981, a 34-year-old Rubén Olivares (89-11-2, 79 KOs) and Margarito Marquez met in the ring.
Olivares came in to the fight on a 1-fight losing streak with a 77% KO rate, and was fighting after a gap of 1 year and 3 months.
Rubén Olivares lost to Margarito Marquez via split decision in the 10-round fight, and adds an loss to his record at 89-12-2.
On August 24, 1980, a 33-year-old Rubén Olivares (89-10-2, 79 KOs) and Rafael Gandarilla met in the ring.
Olivares came in to the fight on a 2-fight win streak with a 78% KO rate, and was fighting after a gap of 3 months and 30 days.
Rubén Olivares lost to Rafael Gandarilla via TKO in the 9th round, and adds an loss to his record at 89-11-2.
On July 21, 1979, a 32-year-old Rubén Olivares (87-9-2, 77 KOs) got a shot at the featherweight WBA title held by 23-year-old Panamanian boxer Eusebio Pedroza (22-3, 15 KOs).
Olivares came in to the fight on a 1-fight win streak with a 78% KO rate, and was fighting after a gap of 21 days. Pedroza was on a 8-fight win streak with a 60% KO rate, and fighting after a layoff of 3 months and 14 days.
Eusebio Pedroza stopped Rubén Olivares via TKO in the 12th round of the 15-round world-title fight, and successfully defended his WBA featherweight title. Pedroza improves his record to 23-3 (16 KOs), while Olivares adds a loss to his record at 87-10-2.
On August 20, 1977, a 30-year-old Rubén Olivares (82-8-1, 73 KOs) and a 25-year-old American boxer Bobby Chacon (36-3, 33 KOs) met in the ring for the 3rd time,.
Olivares came in to the fight on a 1-fight losing streak with a 80% KO rate, and was fighting after a gap of 9 months and 1 day. Chacon was on a 9-fight win streak with a 84% KO rate, and fighting after a layoff of 1 month and 5 days.
In the rematch, Bobby Chacon defeated Rubén Olivares via unanimous decision in the 10-round fight. Chacon improves his record to 37-3, while Olivares adds a loss to his record at 82-9-1.
On November 19, 1976, a 29-year-old Rubén Olivares (82-7-1, 73 KOs) and Jose Cervantes met in the ring.
Olivares came in to the fight on a 2-fight win streak with a 81% KO rate, and was fighting after a gap of 3 months and 20 days.
Rubén Olivares lost to Jose Cervantes via KO in the 6th round, and adds an loss to his record at 82-8-1.
On December 4, 1975, a 28-year-old Rubén Olivares (80-6-1, 72 KOs) and a 23-year-old American boxer Danny Lopez (8-3, 7 KOs) met in the ring.
Olivares came in to the fight on a 1-fight losing streak with a 82% KO rate, and was fighting after a gap of 2 months and 14 days. Lopez was on a 3-fight win streak with a 63% KO rate, and fighting after a layoff of 2 months and 21 days.
Danny Lopez stopped Rubén Olivares via KO in the 7th round. Lopez improves his record to 9-3 (8 KOs), while Olivares adds a loss to his record at 80-7-1.
On September 20, 1975, the 28-year-old WBC featherweight world champion, Rubén Olivares (80-5-1, 72 KOs), faced David Kotey, in a title defense fight.
Olivares came in to the fight on a 2-fight win streak with a 83% KO rate, and was fighting after a gap of 3 months.
Rubén Olivares was defending his featherweight WBC titles against David Kotey and lost via split decision in the 15-round featherweight fight, and adds an loss to his record at 80-6-1.
On November 23, 1974, the 27-year-old WBA featherweight world champion, Rubén Olivares (78-4-1, 70 KOs), faced a 22-year-old Nicaraguan boxer Alexis Arguello (35-4, 29 KOs), in a title defense fight.
Olivares came in to the fight on a 6-fight win streak with a 84% KO rate, and was fighting after a gap of 1 month and 18 days. Argüello was on a 4-fight win streak with a 74% KO rate, and fighting after a layoff of 2 months and 2 days.
Alexis Argüello stopped the champion via KO in the 13th round of the 15-round world-title fight, winning the first world title of his career, and is crowned the new WBA featherweight champion. Argüello improves his record to 36-4 (30 KOs), while Olivares adds a loss to his record at 78-5-1.
On September 15, 1973, a 26-year-old Rubén Olivares (72-3-1, 66 KOs) and Art Hafey met in the ring.
Olivares came in to the fight on a 2-fight win streak with a 86% KO rate, and was fighting after a gap of 2 months and 23 days.
Rubén Olivares lost to Art Hafey via TKO in the 5th round, and adds an loss to his record at 72-4-1.
On November 14, 1972, a 25-year-old Rubén Olivares (70-2-1, 64 KOs) and Rafael Herrera met in the ring for the 2nd time,.
Olivares came in to the fight on a 1-fight win streak with a 87% KO rate, and was fighting after a gap of 2 months and 26 days.
Rubén Olivares lost to Rafael Herrera via majority decision in the 10-round fight, and adds an loss to his record at 70-3-1.
On March 19, 1972, the 25-year-old undisputed bantamweight world champion, Rubén Olivares (69-1-1, 64 KOs), faced a undefined Rafael Herrera undefined in an undisputed title defense fight.
Olivares came in to the fight on a 8-fight win streak with a 90% KO rate, and was fighting after a gap of 3 months and 5 days.
Rubén Olivares was defending his bantamweight WBA, WBC, and The Ring titles against Rafael Herrera and lost via KO in the 8th round, and adds an loss to his record at 69-2-1.
On October 16, 1970, the 23-year-old undisputed bantamweight world champion, Rubén Olivares (61-0-1, 57 KOs), faced a undefined Chucho Castillo undefined in an undisputed title defense fight.
Olivares came in to the fight on a 34-fight win streak with a 91% KO rate, and was fighting after a gap of 1 month and 5 days.
Rubén Olivares was defending his bantamweight WBA, WBC, and The Ring titles against Chucho Castillo and lost via TKO in the 14th round, and adds an loss to his record at 61-1-1.