Roger Federer defeats Alexander Zverev in three sets at ATP Finals in London

Wednesday 15th November 2017 02:00 GMT


Roger Federer made it through to last four of the ATP Finals for 14th time in 15 appearances after seeing off young German Alexander Zverev 7-6 (8-6) 5-7 6-1 at London's O2 on Tuesday night.

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