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Heavyweight Boxer Posts Video of Knocking Out Sparring Partner; Gets Slammed for It Immediately

Sergey Kuzmin has been slammed for posting a sickening video of him knocking a sparring partner out cold.

The Russian heavyweight uploaded a video of himself brutally knocking out his sparring partner on social media.

He appears to land a devastating right hand which immediately flattens his sparring partner who lies motionless on the canvas before receiving medical attention from a coach.

Kuzmin, meanwhile, walks away to a corner before approaching the stricken boxer.

Needless to say, fans reacted angrily to Kuzmin sharing the video.


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