Taking to the social media platform, Federer shared a solo drill that players can try in the comfort of their own homes.
He then asked followers to reply with their own drills – fans from all around the world posted footage attempting the challenge.
The 38-year-old went one further – over the last 24 hours, he responded to number of posts with feedback and words of encouragement.
Is there anything the Fed-Express can’t do?
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