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Tennis • Photo Gallery• Players Chosen By Sam In the U.K. For 10sBalls • Federer, Auger-Aliassime, Zverev, Medvedev, Tsitsipas and Thiem

Roger Federer of Switzerland returns to Matteo Berrettini of Italy in their fourth round match during the Wimbledon Championships at the All England Lawn Tennis Club, in London, Britain, 08 July 2019. EPA-EFE/NIC BOTHMA
Felix Auger-Aliassime of Canada in action during his first round match against Marin Cilic of Croatia at the Rolex Paris Masters tennis tournament in Paris, France, 02 November 2020. EPA-EFE/YOAN VALAT
Alexander Zverev of Germany returns during his group stage match against Diego Schwartzman of Argentina at the ATP Finals in London, Britain, 18 November 2020. EPA-EFE/ANDY RAIN
Daniil Medvedev of Russia in action during his group stage match against Alexander Zverev of Germany at the ATP Finals in London, Britain, 16 November 2020. EPA-EFE/ANDY RAIN
Stefanos Tsitsipas of Greece in action against Andrey Rublev of Russia during their men’s quarterfinal match during the French Open tennis tournament at Roland Garros in Paris, France, 07 October 2020. EPA-EFE/JULIEN DE ROSA
Dominic Thiem of Austria hits a return to Alex de Minaur of Australia during their Quarterfinals match on the tenth day of the US Open Tennis Championships the USTA National Tennis Center in Flushing Meadows, New York, USA, 09 September 2020. Due to the coronavirus pandemic, the US Open is being played without fans and runs from 31 August through 13 September. EPA-EFE/JASON SZENES