On the night of August 27, Ukrainian Oleksandr Usyk defeated Briton Daniel Dubois and defended his WBO, WBA, IBO and IBF heavyweight titles.. The Usyk-Dubois fight became the main event of the boxing evening at the Tarczynski Arena in Wroclaw, Poland. In the fifth round, the Briton hit the Ukrainian below the waist with a powerful blow, due to which Usyk could not get up from the canvas for some time.. A few minutes later, Alexander got to his feet and the fight continued.. In the eighth round, after a series of accurate blows from the Ukrainian, Dubois took a knee, and in the ninth round, after another knockdown, the referee stopped the fight. The news is being supplemented.