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ATP World Tour Finals Day One | Federer full steam ahead, Zverev battles on debut | Britwatch Sports
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Roger Federer starts bid for seventh ATP World Tour Finals title with victory over Jack Sock - Mirror Online
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Jack Sock tries to break into Roger Federer's changing room at ATP finals, this is SNEAKY | Tennis | Sport | Express.co.uk
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ATP Finals: Is a Roger Federer win a forgone conclusion? How dangerous is Jack Sock? Three burning questions ahead of the semi-finals - Sport360 News
![London, UK. 12th November, 2017. Jack Sock (USA) congratulating Roger Federer (SUI) after Federer won the match by two sets in the singles competition in the Nitto ATP Finals at The O2 London, UK. 12th November, 2017. Jack Sock (USA) congratulating Roger Federer (SUI) after Federer won the match by two sets in the singles competition in the Nitto ATP Finals at The O2](https://c8.alamy.com/comp/KH2KB3/london-uk-12th-november-2017-jack-sock-usa-congratulating-roger-federer-KH2KB3.jpg)
London, UK. 12th November, 2017. Jack Sock (USA) congratulating Roger Federer (SUI) after Federer won the match by two sets in the singles competition in the Nitto ATP Finals at The O2
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