World number one Novak Djokovic remained on course for his fourth Shanghai Rolex Masters crown as he defeated Canada's Vasek Pospisil in straight sets to storm into the quarter-finals of the tournament here on Thursday.
The Serbian, who was back in action for the first time since losing the US Open final to Stan Wawrinka, registered a 6-4, 6-4 win over Pospisil in the third round contest that lasted one hour and 20 minutes.
Meanwhile, second-seed Andy Murray also booked his place in the last eight after clinching a 6-1, 6-3 victory over Lucas Pouille of France in the pre-quarterfinals.
Djokovic will next lock horns with Mischa Zverev while Murray will take on either sixth seed Gael Monfils or No. 11 seed David Goffin.
Murray, who has picked up five titles this year, is battling Djokovic to finish year-end as No. 1 in the ATP Rankings.
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