World No. 1 Novak Djokovic has started practising in New York for the American hard-court double – the Western & Southern Open and the US Open.

Djokovic was captured on Instagram on Sunday practising on the Arthur Ashe Stadium court.

Djokovic will be aiming to win his 18th Grand Slam title at the US Open which begins on 31st August.

The video is via the Instagram account of Fábio Oliveira, a physio on the ATP tour.