Though Joseph Parker's camp believe Oleksandr Usyk is the greatest of all time, they say there's one man left to fight in order to truly cement his legacy. That man of course, WBO interim heavyweight champion Joseph Parker.

Customers have complained about DAZN's coverage of the fight - here we speak to a consumer expert about how to get your money back if you've suffered the same problem.

Oleksandr Usyk didn’t just win—he put on a masterclass. A fifth-round knockout of Daniel Dubois at a packed Wembley Stadium crowned him the undisputed heavyweight champion, adding the IBF title to his glittering collection. Fans were still buzzing when the aftershock hit: someone wasn’t letting Usyk enjoy his victory lap for long.

An undisputed heavyweight champion will be crowned on Saturday when Oleksandr Usyk battles Daniel Dubois. Usyk currently holds the WBC, WBA and WBO titles, while Dubois is the IBF champion. The two are set to slug it out at Wembley Stadium in London ( DAZN PPV, 12:30 p.m. ET -- buy now ).