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Dominic Thiem of Austria hits a return during the singles group match against Rafael Nadal of Spain at the ATP World Tour Finals 2020 in London, Britain, on Nov. 17, 2020. (Xinhua/Han Yan)
Dominic Thiem of Austria hits a return during the singles group match against Rafael Nadal of Spain at the ATP World Tour Finals 2020 in London, Britain, on Nov. 17, 2020. (Xinhua/Han Yan)