World number one Rafael Nadal moved into the third round of the Shanghai Masters with an easy victory over unseeded American Jared Donaldson.
The Spaniard did not face a break point as he took just 54 minutes to beat Donaldson 6-2 6-1.
Nadal will play Italy’s Fabio Fognini in the next round.
Earlier, Britain’s Aljaz Bedene was forced to retire from his second-round match against Germany’s Alexander Zverev with a knee injury.
Bedene, ranked 48th in the world, was trailing 4-0 when he ended the match after just 12 minutes on court.
It is the second time in two weeks that Bedene has retired mid-match, and the seventh time in his career.
World number four Zverev will go on to play Argentina’s Juan Martin del Potro in the third round.