Oleksandr Usyk knocked out Daniel Dubois to reign as the undisputed heavyweight boxing champion. Round-by-round analysis.

Oleksandr Usyk has scored a fifth-round knockout of Daniel Dubois to become the undisputed world heavyweight champion for a second time on Saturday.

At Wembley, Usyk stopped Dubois for the second time, regaining his status as undisputed heavyweight champion. He made it look simple; now things get