Oleksandr Usyk was crowned unified cruiserweight world champion by edging out Mairis Briedis in a sensational World Boxing Super Series semi-final showdown on Saturday.

The Ukrainian, who has been sparring with Isaac Chamberlain ahead of 'British Beef' on March 3, live on Sky Sports, took a narrow points success in Riga, Latvia, with scores of 114-114, 115-113, 115-113 earning him the WBC belt while retaining his WBO title.

Usyk, the tournament's No 1 seed, will now wait and see who wins next weekend's semi-final between IBF holder Murat Gassiev and WBA 'super' counterpart Yunier Dorticos, with the inaugural Muhammad Ali Trophy and the chance to become the first cruiserweight to hold all four belts on the line in the final.