Unified Middleweight World Champion Gennady Golovkin puts his WBC and WBA belts on the line against Vanes Martirosyan in California, live and exclusive on BoxNation on May 5th.

'Triple G' was due to meet Canelo Alvarez in a Cinco de Mayo rematch until the Mexican tested positive for clenbuterol, delaying a potential second showdown

A win over Martirosyan will mean Golovkin equals Bernard Hopkins' record of 20 Middleweight Title defences, so the Kazakh will be eager to put on a show. We're live on air at 3am!

Coming up in our stacked summer schedule, Jorge Linares and Vasyl Lomachenko go to battle on May 12th, followed by Lee Selby v Josh Warrington in Leeds.

Buy BoxNation to watch this show, as well as our upcoming schedule. Sky TV customers can use code CHAMPIONS for free registration (saving £8). We're live at 3am!

*Please note, all fights subject to change without notice.

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Ryan MARTIN v Breidis PRESCOTT

10 x 3 Minute Rounds: Super-Lightweight contest

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Taped bout

Ruslan MADIYEV v Jesus PEREZ

x 3 Minute Rounds: Super-Lightweight contest

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Follows

Cecilia BRAEKHUS v Kalis REIS

10 x 2 Minute Rounds: The women's Welterweight Championship

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Follows

Gennady GOLOVKIN v Vanes MARTIROSYAN

12 x 3 Minute Rounds: The WBC and WBA World Middleweight Title

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