Daniil Medvedev came from behind to beat US Open champion Dominic Thiem in a gruelling encounter and win the biggest title of his career at the ATP Finals in London on Sunday.
The Russian fourth seed was second best for large periods at the empty O2 Arena but found a way back into the contest and prevailed 4-6, 7-6 (7/2), 6-4.
Medvedev, who beat five-time champion Novak Djokovic and world No 2 Rafael Nadal earlier in the week, is the first player to sweep the top three players in the rankings at the season finale.
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