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17th November 2018, O2 Arena, London, England; Nitto ATP Tennis Finals; Roger Federer (SWI) with a backhand shot in his game versus Alexander Zverev (GER Stock Photo - Alamy
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O2 arena, London, UK. 18 November, 2018. Centre court at the O2 gears up for Finals day of the Nitto ATP Finals 2018. Alexander Zverev (GER), ranked 3 will play world number
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