![TOPSHOT - Serbia's Novak Djokovic walks on court to play against Germany's Alexander Zverev during their mens singles round-robin match on day four of the ATP World Tour Finals tennis tournament at the O2 Arena in London on November 14, 2018. / AFP / Glyn KIRK](https://thenational-the-national-prod.cdn.arcpublishing.com/resizer/v2/4EYBJIHX4I3YFMRTCXHYOUM3N4.jpg?smart=true&auth=920fcf751c3447857ce6d93132e9ecf0e3c24038fe9b192f18eddcfbb76967e8&width=400&height=225)
World No 1 Novak Djokovic is unhappy with the confusion in the men's game at the moment. AFP
World No 1 Novak Djokovic is unhappy with the confusion in the men's game at the moment. AFP
ATP Finals: Novak Djokovic calls for resolution to feud over team events in men's tennis
World No 1 frustrated with ATP and ITF as they fight over best way to use team-based competitions that have been overshadowed by four majors
Agence France Presse
14 November, 2018