Sergey Kovalev's greatest hits
Watch some of the best knockouts in the career of Sergey "Krusher" Kovalev, who fights Eleider Alvarez in Atlantic City on Aug. 4, 2018.
Watch some of the best knockouts in the career of Sergey "Krusher" Kovalev, who fights Eleider Alvarez in Atlantic City on Aug. 4, 2018.