World number six Novak Djokovic produced a scintillating display of tennis as he lifted his third US Open title after sweeping aside Juan Martin Del Potro of Argentina in straight sets in the finals of the tournament on Sunday.

The 31-year-old Serbian survived an epic second set before he ran through the third set to clinch a 6-3, 7-6 (4), 6-3 win over world number six Potro in the summit showdown of the men's singles event that lasted three hours and 15 minutes.