"I'm not his friend" S&C Trainer Eric Hernandez on his long term working relationship with Daniil Medvedev [Tie Break 02]

A short clip from next week's episode with Eric Hernandez, the strength and conditioning coach of Daniil Medvedev since Daniil turned pro in 2014.

Eric tells us how he has maintained his long term relationship with Daniil.

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