Injured Novak Djokovic says decision not to play for rest of 2017 was 'not easy'

World number four Novak Djovokic will not play tennis again in 2017. The 12-time Grand Slam winner said "professionally this is not an easy decision for me" as he shared the news on his Facebook page.

READ MORE: Twelve-time Grand Slam champion will not play again in 2017

READ MORE: Wimbledon 2017: Novak Djokovic out after retiring injured against Tomas Berdych