On September 28, 2017, a 30-year-old Oscar Rivas (20-0, 15 KOs) and Carl Davis Drumond met in the ring in a heavyweight bout.
Rivas came in to the fight on a 20-fight win streak with a 75% KO rate, and was fighting after a gap of 1 year, 1 month, and 30 days.
Oscar Rivas stopped Carl Davis Drumond via KO in the 1st round. Rivas improves his record to 21-0 (16 KOs)
On January 18, 2019, a 31-year-old Oscar Rivas (25-0, 17 KOs) and a 34-year-old American boxer Bryant Jennings (24-2, 14 KOs) met in the ring in a heavyweight bout.
Rivas came in to the fight on a 25-fight win streak with a 68% KO rate, and was fighting after a gap of 1 month and 17 days. Jennings was on a 5-fight win streak with a 53% KO rate, and fighting after a layoff of 5 months.
Oscar Rivas stopped Bryant Jennings via TKO in the 12th round. Rivas improves his record to 26-0 (18 KOs), while Jennings adds a loss to his record at 24-3.
On November 28, 2015, a 28-year-old Oscar Rivas (17-0, 12 KOs) and a 34-year-old American boxer Joey Abell (31-8, 29 KOs) met in the ring.
Rivas came in to the fight on a 17-fight win streak with a 70% KO rate, and was fighting after a gap of 5 months and 2 days. Abell was on a 2-fight win streak with a 74% KO rate, and fighting after a layoff of 1 month and 11 days.
Oscar Rivas stopped Joey Abell via KO in the 2nd round. Rivas improves his record to 18-0 (13 KOs), while Abell adds a loss to his record at 31-9.
On June 4, 2016, a 28-year-old Oscar Rivas (18-0, 13 KOs) and Jeremy Bates met in the ring.
Rivas came in to the fight on a 18-fight win streak with a 72% KO rate, and was fighting after a gap of 6 months and 7 days.
Oscar Rivas stopped Jeremy Bates via KO in the 1st round. Rivas improves his record to 19-0 (14 KOs)
On January 18, 2014, a 26-year-old Oscar Rivas (12-0, 7 KOs) and Shawn Cox met in the ring.
Rivas came in to the fight on a 12-fight win streak with a 58% KO rate, and was fighting after a gap of 1 year, 1 month, and 4 days.
Oscar Rivas stopped Shawn Cox via TKO in the 3rd round. Rivas improves his record to 13-0 (8 KOs)
On December 1, 2018, a 31-year-old Oscar Rivas (24-0, 17 KOs) and Fábio Maldonado met in the ring in a heavyweight bout.
Rivas came in to the fight on a 24-fight win streak with a 70% KO rate, and was fighting after a gap of 6 months and 12 days.
Oscar Rivas defeated Fábio Maldonado via unanimous decision in the 10-round heavyweight fight. Rivas improves his record to 25-0
On October 22, 2021, a 34-year-old Oscar Rivas (27-1, 19 KOs) and a 26-year-old Canadian boxer Ryan Rozicki (13-0, 13 KOs) met in the ring.
Rivas came in to the fight on a 1-fight win streak with a 67% KO rate, and was fighting after a gap of 7 months and 6 days. Rozicki was on a 13-fight win streak with a 100% KO rate, and fighting after a layoff of 5 months and 29 days.
Oscar Rivas defeated Ryan Rozicki via unanimous decision in the 12-round fight. Rivas improves his record to 28-1, while Rozicki adds a loss to his record at 13-1.
On April 4, 2015, a 27-year-old Oscar Rivas (15-0, 10 KOs) and Ozcan Cetinkaya met in the ring.
Rivas came in to the fight on a 15-fight win streak with a 66% KO rate, and was fighting after a gap of 6 months and 12 days.
Oscar Rivas stopped Ozcan Cetinkaya via TKO in the 1st round. Rivas improves his record to 16-0 (11 KOs)
On May 21, 2011, a 23-year-old Oscar Rivas (5-0, 2 KOs) and Zsolt Zathureczky met in the ring.
Rivas came in to the fight on a 5-fight win streak with a 40% KO rate, and was fighting after a gap of 1 month and 13 days.
Oscar Rivas stopped Zsolt Zathureczky via TKO in the 1st round. Rivas improves his record to 6-0 (3 KOs)
On June 26, 2015, a 28-year-old Oscar Rivas (16-0, 11 KOs) and Jason Pettaway met in the ring.
Rivas came in to the fight on a 16-fight win streak with a 68% KO rate, and was fighting after a gap of 2 months and 22 days.
Oscar Rivas stopped Jason Pettaway via KO in the 1st round. Rivas improves his record to 17-0 (12 KOs)