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 a 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 a 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 a 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 a 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 a 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 a 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 a 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 a 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 a loss to his record at 61-1-1.