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The ATP World Tour's Shanghai Masters event, that is. The event turns 10 years young this year, and Federer took to singing a "Happy Birthday" song in Chinese to both the tournament and to Dashi, its lion mascot accompanying him.

Come for those 15 seconds of Fed singing. Stay for his unadulterated, child-like laughter at the 55-second mark.

Though Federer just pulled out of the Roger's Cup, he seems locked in for the Shanghai stop in October.

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Roger Federer withdraws from @RogersCup Toronto: "With scheduling being the key to my longevity moving forward, I have regrettably decided to withdraw..."

On a brighter note, Andy Murray has taken a wild card.

More: https://t.co/X6NJhgjX1D pic.twitter.com/kWyBlYdAdg
— TENNIS (@Tennis) July 24, 2018

You simply must tip your hat here to the GOAT. Sure, he and the event have a strong monetary link here – mutual sponsor Rolex – but he's hardly too proud to open up his voice and draw guffaws from the viewing public.

Follow Jon on Twitter @jonscott9.

Federer sings in Chinese for Shanghai anniversary

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Strokes of Genius is a world-class documentary capturing the historic 13-year rivalry between tennis icons Roger Federer and Rafael Nadal. It is timed for release as the anticipation crests with Roger as returning champion, 10 years after their famed 2008 Wimbledon championship – an epic match so close and so reflective of their competitive balance that, in the end, the true winner was the sport itself.

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