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Washington DC, USA. 4 August 2018. Alexander Zverev plays a backhand shot during a Citi Open tennis match at Rock Creek Park in Washington DC. Justin Cooper/CSM Stock Photo - Alamy
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Washington DC, USA, 3 Aug 2018. August 3, 2018: Andrea Petkovic during a Citi Open tennis match at Rock Creek Park in Washington DC. Justin Cooper/CSM Stock Photo - Alamy
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