On April 17, 2004, a 33-year-old Carlos Rios (52-10-3, 33 KOs) and Fabio Daniel Oliva met in the ring.
Rios came in to the fight on a 1-fight losing streak with a 50% KO rate, and was fighting after a gap of 4 months and 12 days.
Carlos Rios lost to Fabio Daniel Oliva via KO in the 2nd round, and adds a loss to his record at 52-11-3.
On December 5, 2003, a 32-year-old Carlos Rios (52-9-3, 33 KOs) and a 32-year-old Australian boxer Lovemore Ndou (35-5-1, 21 KOs) met in the ring in a super-lightweight bout.
Rios came in to the fight on a 1-fight win streak with a 51% KO rate, and was fighting after a gap of 1 month and 18 days. N'dou was on a 4-fight win streak with a 51% KO rate, and fighting after a layoff of 1 month and 5 days.
Lovemore N'dou stopped Carlos Rios via KO in the 5th round. N'dou improves his record to 36-5-1 (22 KOs), while Rios adds a loss to his record at 52-10-3.
On October 26, 2002, a 31-year-old Carlos Rios (51-8-2, 33 KOs) and Jorge Rodrigo Barrios met in the ring in a super-featherweight bout.
Rios came in to the fight on a 1-fight win streak with a 54% KO rate, and was fighting after a gap of 28 days.
Carlos Rios lost to Jorge Rodrigo Barrios via technical decision in the 10-round super-featherweight fight, and adds a loss to his record at 51-9-2.
On February 9, 2002, a 30-year-old Carlos Rios (50-7-2, 32 KOs) and Jose Pablo Estrella met in the ring for the 2nd time,.
Rios came in to the fight on a 1-fight losing streak with a 54% KO rate, and was fighting after a gap of 6 months and 15 days.
Carlos Rios lost to Jose Pablo Estrella via split decision in the 10-round fight, and adds a loss to his record at 50-8-2.
On July 25, 2001, a 30-year-old Carlos Rios (50-6-2, 32 KOs) and a 24-year-old South African boxer Phillip Ndou (23-1, 23 KOs) met in the ring in a super-featherweight bout.
Rios came in to the fight on a 1-fight win streak with a 55% KO rate, and was fighting after a gap of 2 months and 27 days. N'dou was on a 13-fight win streak with a 95% KO rate, and fighting after a layoff of 1 month and 23 days.
Phillip N'dou stopped Carlos Rios via KO in the 5th round. N'dou improves his record to 24-1 (24 KOs), while Rios adds a loss to his record at 50-7-2.
On December 2, 2000, a 29-year-old Carlos Rios (49-5-2, 31 KOs) and Jose Pablo Estrella met in the ring.
Rios came in to the fight on a 1-fight losing streak with a 55% KO rate, and was fighting after a gap of 2 months and 9 days.
Carlos Rios lost to Jose Pablo Estrella via unanimous decision in the 10-round fight, and adds a loss to his record at 49-6-2.
On September 23, 2000, a 29-year-old Carlos Rios (49-4-2, 31 KOs) got a shot at the super-featherweight WBO title held by 25-year-old Brazilian boxer Acelino Freitas (26-0, 26 KOs).
Rios came in to the fight on a 1-fight win streak with a 56% KO rate, and was fighting after a gap of 21 days. Freitas was on a 26-fight win streak with a 100% KO rate, and fighting after a layoff of 3 months and 13 days.
Acelino Freitas stopped Carlos Rios via TKO in the 9th round of the 12-round world-title fight, and successfully defended his WBO super-featherweight title. Freitas improves his record to 27-0 (27 KOs), while Rios adds a loss to his record at 49-5-2.
On March 5, 2000, a 28-year-old Carlos Rios (48-3-2, 31 KOs) and Robbie Peden met in the ring in a super-featherweight bout.
Rios came in to the fight on a 1-fight win streak with a 58% KO rate, and was fighting after a gap of 1 month and 5 days.
Carlos Rios lost to Robbie Peden via split decision in the 12-round super-featherweight fight, and adds a loss to his record at 48-4-2.
On February 17, 1999, a 27-year-old Carlos Rios (44-2-1, 30 KOs) got a shot at the super-featherweight WBC title held by 21-year-old American boxer Floyd Mayweather Jr. (19-0, 15 KOs).
Rios came in to the fight on a 1-fight win streak with a 63% KO rate, and was fighting after a gap of 3 months and 3 days. Mayweather Jr. was on a 19-fight win streak with a 78% KO rate, and fighting after a layoff of 1 month and 29 days.
Floyd Mayweather Jr. defeated Carlos Rios via unanimous decision and successfully defended his WBC super-featherweight title. Mayweather Jr. improves his record to 20-0, while Rios adds a loss to his record at 44-3-1.
On September 12, 1998, a 27-year-old Carlos Rios (43-1-1, 30 KOs) and Cesar Soto met in the ring.
Rios came in to the fight on a 4-fight win streak with a 66% KO rate, and was fighting after a gap of 1 month and 11 days.
Carlos Rios lost to Cesar Soto via unanimous decision in the 10-round fight, and adds a loss to his record at 43-2-1.
On December 6, 1997, a 26-year-old Carlos Rios (39-0-1, 30 KOs) got a shot at the featherweight WBC title held by 30-year-old Filipino boxer Luisito Espinosa (41-7, 21 KOs).
Rios came in to the fight on a 35-fight win streak with a 75% KO rate, and was fighting after a gap of 4 months and 24 days. Espinosa was on a 9-fight win streak with a 43% KO rate, and fighting after a layoff of 6 months and 19 days.
Luisito Espinosa stopped Carlos Rios via TKO in the 6th round of the 12-round world-title fight, and successfully defended his WBC featherweight title. Espinosa improves his record to 42-7 (22 KOs), while Rios adds a loss to his record at 39-1-1.