Novak Djokovic ensured he will return to the top of tennis’s world rankings with an emphatic first round victory at the US Open on Monday as women’s World No. 1 Iga Swiatek and American rival Coco Gauff advanced. 

Djokovic, chasing a record-extending 24th Grand Slam singles title in New York, shrugged off a late-night start on the Arthur Ashe Stadium to demolish France’s Alexandre Muller 6-0, 6-2, 6-3 in just 1hr 35min.