Djokovic cruises into US Open fourth round

World number one Novak Djokovic moved comfortably into the US Open fourth round, beating Jan-Lennard Struff in straight sets.

The 33-year-old Serb saw off the German 28th seed 6-3 6-3 6-1 in the night session on Arthur Ashe Stadium.

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Djokovic, seeking his 18th Grand Slam title, remains unbeaten in 2020 and has now extended his winning streak to 26.

But Greek fourth seed Stefanos Tsitsipas is out after blowing six match points against Borna Coric.

He was leading 5-1 in the fourth set but could not get over the line and Coric won six successive games to send the match into a deciding set which the Croatian won to complete a remarkable turnaround 6-7 (2-7) 6-4 4-6 7-5 7-6 (7-4).