LONDON -- Oleksandr Usyk knocked out Daniel Dubois in the fifth round and became the undisputed world heavyweight champion for a second time on Saturday. The undefeated southpaw retained his WBA, WBC and WBO belts and regained the IBF belt he relinquished just over a year ago.

Listen to radio commentary and follow live text updates of Oleksandr Usyk vs Daniel Dubois 2 at Wembley Stadium.

Oleksandr Usyk noqueó a Daniel Dubois en el quinto asalto de su combate del sábado y se convirtió en el campeón mundial indiscutible de los pesados por

Usyk and Dubois will run it again on Saturday, this time for the undisputed heavyweight championship, at London's Wembley Stadium (DAZN PPV, 2 p.m. ET). Usyk won the first fight in 2023 by ninth-round KO.

Listen to radio commentary and follow live text updates of Oleksandr Usyk vs Daniel Dubois 2 at Wembley Stadium.

Usyk is regularly the smaller man in his heavyweight bouts, but he is not short of power, as was on display when he put an end to Dubois in the fifth round. Dubois was put down, returned to his feet,