Sergey Kovalev KO highlight reel

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Sergey Kovalev KO highlight reel

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Sergey Kovalev KO highlight reel

Yahoo Sports Videos 0:33 mins

Watch the best of the best from Sergey 'The Krusher' Kovalev ahead of his WBO light-heavyweight title fight against Nathan Cleverly, Saturday from Motorpoint Arena in Cardiff, Wales on HBO.

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