Watch #highlights of #oleksandrusyk best knockout when he beat Tony Bellew. Next up for Top Rank Boxing, Ukraine's unified WBA/WBO/IBF heavyweight world champion Oleksandr Usyk will defend his titles against WBA mandatory challenger Daniel Dubois on Saturday, August 26 at Tarczynski Arena Wroclaw in Wroclaw, Poland. Usyk, a 36-year-old southpaw who hopes to become the undisputed king in a second weight class, will spend Ukrainian Independence Day weekend putting his belts on the line against London's hard-hitting Dubois. Promoted by K2 Promotions, in association with Queensberry, #usykdubois and undercard bouts will stream live and exclusively on ESPN+ in the United States starting at 2 p.m. ET/11 a.m. PT. Try ESPN+ For Free: https://watch.espnplus.com/toprank/ Subscribe to our YouTube channel to get notified about the latest highlights, free full fights, and fight week content as it's posted. Follow Top Rank on Twitter: http://www.twitter.com/trboxing Follow Top Rank on In