On February 26, 2011, a 24-year-old Brandon Ríos (26-0-1, 19 KOs) got a shot at the WBA lightweight title held by 32-year-old Venezuelan boxer Miguel Acosta (28-3-2, 22 KOs).
Ríos came in to the fight on a 8-fight win streak with a 70% KO rate, and was fighting after a gap of 3 months and 13 days. Acosta was on a 19-fight win streak with a 66% KO rate, and fighting after a layoff of 3 months and 1 day.
Brandon Ríos stopped the champion via TKO in the 10th round of the 12-round world-title fight, winning the first world title of his career, and is crowned the new WBA lightweight champion. Ríos improves his record to 27-0-1 (20 KOs), while Acosta adds a loss to his record at 28-4-2.
On July 9, 2011, the 25-year-old WBA lightweight world champion, Brandon Ríos (27-0-1, 20 KOs), faced a 28-year-old Mexican boxer Urbano Antillón (28-2, 20 KOs), in a title defense fight.
Ríos came in to the fight on a 9-fight win streak with a 71% KO rate, and was fighting after a gap of 4 months and 13 days. Antillon was on a -1-fight win streak with a 66% KO rate, and fighting after a layoff of 7 months and 5 days.
Brandon Ríos made easy work of Urbano Antillón, stopping the challenger via KO in the 3rd. Ríos improves his record to 28-0-1 (21 KOs), while Antillon adds a loss to his record at 28-3.
On January 24, 2015, a 28-year-old Brandon Ríos (32-2-1, 23 KOs) and a 34-year-old Mike Alvarado (34-3, 23 KOs) met in the ring for the 3rd time, in a welterweight bout.
Ríos came in to the fight on a 1-fight win streak with a 65% KO rate, and was fighting after a gap of 5 months and 22 days. Alvarado was on a -2-fight win streak with a 62% KO rate, and fighting after a layoff of 8 months and 7 days.
In the rematch, Brandon Ríos stopped Mike Alvarado via RTD in the 3rd round. Ríos improves his record to 33-2-1 (24 KOs), while Alvarado adds a loss to his record at 34-4.
On February 6, 2010, a 23-year-old Brandon Ríos (23-0-1, 17 KOs) and Jorge Teron met in the ring in a lightweight bout.
Ríos came in to the fight on a 5-fight win streak with a 70% KO rate, and was fighting after a gap of 3 months.
Brandon Ríos stopped Jorge Teron via TKO in the 3rd round. Ríos improves his record to 24-0-1 (18 KOs)
On October 13, 2012, a 26-year-old Brandon Ríos (30-0-1, 22 KOs) and a 32-year-old Mike Alvarado (33-0, 23 KOs) met in the ring in a super-lightweight bout.
Ríos came in to the fight on a 12-fight win streak with a 71% KO rate, and was fighting after a gap of 5 months and 29 days. Alvarado was on a 33-fight win streak with a 69% KO rate, and fighting after a layoff of 5 months and 29 days.
Brandon Ríos stopped Mike Alvarado via TKO in the 7th round. Ríos improves his record to 31-0-1 (23 KOs), while Alvarado adds a loss to his record at 33-1.
On September 12, 2009, a 23-year-old Brandon Ríos (20-0-1, 14 KOs) and Daniel Valenzuela met in the ring.
Ríos came in to the fight on a 2-fight win streak with a 66% KO rate, and was fighting after a gap of 3 months and 27 days.
Brandon Ríos stopped Daniel Valenzuela via KO in the 2nd round. Ríos improves his record to 21-0-1 (15 KOs)
On July 25, 2008, a 22-year-old Brandon Ríos (17-0, 11 KOs) and Sandro Marcos met in the ring.
Ríos came in to the fight on a 17-fight win streak with a 64% KO rate, and was fighting after a gap of 2 months and 8 days.
Brandon Ríos stopped Sandro Marcos via TKO in the 2nd round. Ríos improves his record to 18-0 (12 KOs)
On March 14, 2008, a 21-year-old Brandon Ríos (15-0, 10 KOs) and Alvin Brown met in the ring.
Ríos came in to the fight on a 15-fight win streak with a 66% KO rate, and was fighting after a gap of 9 months and 18 days.
Brandon Ríos stopped Alvin Brown via TKO in the 2nd round. Ríos improves his record to 16-0 (11 KOs)
On November 13, 2010, a 24-year-old Brandon Ríos (25-0-1, 18 KOs) and Omri Lowther met in the ring.
Ríos came in to the fight on a 7-fight win streak with a 69% KO rate, and was fighting after a gap of 2 months and 2 days.
Brandon Ríos stopped Omri Lowther via TKO in the 5th round. Ríos improves his record to 26-0-1 (19 KOs)
On May 16, 2009, a 23-year-old Brandon Ríos (19-0-1, 13 KOs) and Oscar Meza met in the ring.
Ríos came in to the fight on a 1-fight win streak with a 65% KO rate, and was fighting after a gap of 4 months and 27 days.
Brandon Ríos stopped Oscar Meza via TKO in the 5th round. Ríos improves his record to 20-0-1 (14 KOs)