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England's Simon Dyson shot a five-under-par 67 to take a share of the lead with Spain's Alvaro Quiros after the first round of the China Open.

Dyson, who was given a suspended two-month ban after disqualification from the BMW Masters last October, made six birdies and a bogey in Shenzhen.

"The first nine holes was the best I have played for quite some time," Dyson told the European Tour.

England's Ian Poulter had four birdies for a three-under par share of ninth.

World number three Henrik Stenson, who can take the top spot in the rankings from Tiger Woods with victory in China, suffered a fourth bogey of the day on the last for a 71.

Play was suspended because of darkness with five players yet to complete their opening rounds.