![ATP Finals: 2016: Novak Djokovic defends his actions after hitting ball towards entourage during opening victory | The Independent | The Independent ATP Finals: 2016: Novak Djokovic defends his actions after hitting ball towards entourage during opening victory | The Independent | The Independent](https://static.independent.co.uk/s3fs-public/thumbnails/image/2016/11/13/19/novak-djokovic.jpg)
ATP Finals: 2016: Novak Djokovic defends his actions after hitting ball towards entourage during opening victory | The Independent | The Independent
![Alexander Zverev, Australian Open 2016 Tennis - Australian Open 2016 - Melbourne - Grand Slam ITF / ATP / WTA - Melbourne Park - Australia - 2016 | Juergen Hasenkopf Photography Alexander Zverev, Australian Open 2016 Tennis - Australian Open 2016 - Melbourne - Grand Slam ITF / ATP / WTA - Melbourne Park - Australia - 2016 | Juergen Hasenkopf Photography](https://m.psecn.photoshelter.com/img-get2/I0000txfM3LJdnt4/fit=1000x750/Alexander-Zverev-Australian-Open-2016-20160119-13475373.jpg)
Alexander Zverev, Australian Open 2016 Tennis - Australian Open 2016 - Melbourne - Grand Slam ITF / ATP / WTA - Melbourne Park - Australia - 2016 | Juergen Hasenkopf Photography
![Rafael Nadal tennis player from Spain competing at the Rio 2016 Summer Olympic Games. Spanish athlete on court, former world number one ATP rankings Stock Photo - Alamy Rafael Nadal tennis player from Spain competing at the Rio 2016 Summer Olympic Games. Spanish athlete on court, former world number one ATP rankings Stock Photo - Alamy](https://c8.alamy.com/comp/2HGKFBC/rafael-nadal-tennis-player-from-spain-competing-at-the-rio-2016-summer-olympic-games-spanish-athlete-on-court-former-world-number-one-atp-rankings-2HGKFBC.jpg)
Rafael Nadal tennis player from Spain competing at the Rio 2016 Summer Olympic Games. Spanish athlete on court, former world number one ATP rankings Stock Photo - Alamy
![Murray-Raonic, Djokovic-Nishikori Semi-Final Highlights: 2016 Barclays ATP World Tour Finals - YouTube Murray-Raonic, Djokovic-Nishikori Semi-Final Highlights: 2016 Barclays ATP World Tour Finals - YouTube](https://i.ytimg.com/vi/lFmcL8RYUkg/maxresdefault.jpg)
Murray-Raonic, Djokovic-Nishikori Semi-Final Highlights: 2016 Barclays ATP World Tour Finals - YouTube
TENNIS on Twitter: "Roger Federer, Juan Martin del Potro take home ATP World Tour Awards | https://t.co/38SkJ8RNt3 https://t.co/KRqlLAE8nu" / Twitter
![161120) -- LONDON, Nov. 20, 2016 (Xinhua) -- Novak Djokovic of Serbia competes during the singles final with Andy Murray of Great Britain at the 2016 ATP World Tour Final at the 161120) -- LONDON, Nov. 20, 2016 (Xinhua) -- Novak Djokovic of Serbia competes during the singles final with Andy Murray of Great Britain at the 2016 ATP World Tour Final at the](https://c8.alamy.com/comp/2EWNE49/161120-london-nov-20-2016-xinhua-novak-djokovic-of-serbia-competes-during-the-singles-final-with-andy-murray-of-great-britain-at-the-2016-atp-world-tour-final-at-the-o2-in-london-britain-on-nov-20-2016-xinhuahan-yan-photo-by-xinhuasipa-usa-2EWNE49.jpg)