Men’s tennis world No.1 Novak Djokovic has been disqualified from the US Open for hitting a line judge in the throat with a ball. Subscribe: https://bit.ly/2noaGhv Get more breaking news at: https://bit.ly/2nobVgF Join 9News for the latest in news and events that affect you in your local city, as well as news from across Australia and the world. Follow 9News on Facebook: https://www.facebook.com/9News/ Follow 9News on Twitter: https://twitter.com/9NewsAUS Follow 9News on Instagram: https://www.instagram.com/9news/ #9News #BreakingNews #NineNewsAustralia #9NewsAUS