![JACK SOCK (USA) Tennis - ATP World Tour Finals 2017 - London - ATP - O2 Arena - Great Britain - 2017 | Juergen Hasenkopf Photography JACK SOCK (USA) Tennis - ATP World Tour Finals 2017 - London - ATP - O2 Arena - Great Britain - 2017 | Juergen Hasenkopf Photography](https://m.psecn.photoshelter.com/img-get/I0000PILzrjU_jJc/s/1200/I0000PILzrjU_jJc.jpg)
JACK SOCK (USA) Tennis - ATP World Tour Finals 2017 - London - ATP - O2 Arena - Great Britain - 2017 | Juergen Hasenkopf Photography
![American Jack Sock Wins Rollercoaster Against Alexander Zverev To Reach Semi-finals at Nitto ATP Finals | ATP Tour | Tennis American Jack Sock Wins Rollercoaster Against Alexander Zverev To Reach Semi-finals at Nitto ATP Finals | ATP Tour | Tennis](https://www.atptour.com/en/news/www.atptour.com/-/media/images/news/2017/11/16/21/02/sock-nitto-atp-finals-2017-thursday.jpg)
American Jack Sock Wins Rollercoaster Against Alexander Zverev To Reach Semi-finals at Nitto ATP Finals | ATP Tour | Tennis
![Jack Sock explains anger and point penalty as he makes ATP semis alongside Roger Federer | Tennis | Sport | Express.co.uk Jack Sock explains anger and point penalty as he makes ATP semis alongside Roger Federer | Tennis | Sport | Express.co.uk](https://cdn.images.express.co.uk/img/dynamic/72/590x/secondary/Jack-Sock-ATP-World-Tour-Finals-1131661.jpg)
Jack Sock explains anger and point penalty as he makes ATP semis alongside Roger Federer | Tennis | Sport | Express.co.uk
![ATP World Tour Finals: Jack Sock Downs Alexander Zverev To Make Semis, Roger Federer Haunts Marin Cilic | Tennis News ATP World Tour Finals: Jack Sock Downs Alexander Zverev To Make Semis, Roger Federer Haunts Marin Cilic | Tennis News](https://i.ndtvimg.com/i/2017-11/jack-sock-world-tour-semis-afp_806x605_71510894098.jpg)
ATP World Tour Finals: Jack Sock Downs Alexander Zverev To Make Semis, Roger Federer Haunts Marin Cilic | Tennis News
![Jack Sock in action against Roger Federer during day one of the NITTO ATP World Tour Finals at the O2 Arena, London Stock Photo - Alamy Jack Sock in action against Roger Federer during day one of the NITTO ATP World Tour Finals at the O2 Arena, London Stock Photo - Alamy](https://c8.alamy.com/comp/KH3DJR/jack-sock-in-action-against-roger-federer-during-day-one-of-the-nitto-KH3DJR.jpg)
Jack Sock in action against Roger Federer during day one of the NITTO ATP World Tour Finals at the O2 Arena, London Stock Photo - Alamy
![ATP World Tour Finals: Jack Sock overcomes hurdles to beat Marin Cilic | Tennis | Sport | Express.co.uk ATP World Tour Finals: Jack Sock overcomes hurdles to beat Marin Cilic | Tennis | Sport | Express.co.uk](https://cdn.images.express.co.uk/img/dynamic/72/590x/Jack-Sock-879538.jpg)
ATP World Tour Finals: Jack Sock overcomes hurdles to beat Marin Cilic | Tennis | Sport | Express.co.uk
![ATP Tennis, London, November 18, 2017 Jack SOCK, USA in Action volley Jack SOCK, USA vs Grigor DIMITROV, BUL at the NITTO ATP FINALS Tennis men in Millenium Arena, O2 Arena London, ATP Tennis, London, November 18, 2017 Jack SOCK, USA in Action volley Jack SOCK, USA vs Grigor DIMITROV, BUL at the NITTO ATP FINALS Tennis men in Millenium Arena, O2 Arena London,](https://c8.alamy.com/comp/KHN0F2/atp-tennis-london-november-18-2017-jack-sock-usa-in-action-volley-KHN0F2.jpg)