Óscar Rivas

Rivas turned pro in 2009 for Yvon Michel in Canada. After compiling a perfect record of 20-0, he captured the vacant NABF heavyweight title in his 21st fight after beating former world title challenger Carl Davis Drumond by first-round knockout on 28 September 2017, with the stoppage coming just 68 seconds into the fight.[9]

After four more consecutive wins, Rivas defeated former WBA interim heavyweight champion Bryant Jennings via twelfth-round technical knockout in his 26th fight on 18 January 2019 to win the IBF International and WBO-NABO heavyweight titles.[10] Jennings was a highly ranked heavyweight at the time, ranked at #2 by the WBO, #7 by the WBA, #8 by the IBF and #14 by the WBC.[11]

With an undefeated record of 26-0, Rivas challenged Dillian Whyte for the vacant WBC interim heavyweight title. Whyte was ranked #1 by the WBC and #3 by the WBA and WBO at heavyweight.[12] Rivas knocked Whyte down in the ninth round with a right uppercut, but he ultimately lost the fight by unanimous decision with scores of 116–112, 115–111, 115–111.[13]

Rivas was scheduled to meet Bryant Jennings on 18 June 2021 in Canada in a rematch of their 2019 fight for the inaugural WBC bridgerweight title, but the fight was postponed and ultimately cancelled.[14][15]

On 16 March, 2021, Rivas fought Sylvera Louis. Rivas won the fight within three rounds via TKO.[16]

On 22 October 2021, Rivas outpointed undefeated Ryan Rozicki to a unanimous decision with scores of 116–111 and 115–112 twice to become the inaugural WBC bridgerweight champion.[17]