Paul Casey forced to retire before final round

FROM THE AOL GOLF NEWS SERVICE
Paul Casey's hopes of winning the inaugural Race to Dubai title are in tatters after the Ryder Cup star was forced to pull out of the final round of the World Golf Championships-HSBC Champions.
Casey quit the tournament after suffering a recurrence of the rib injury which has blighted his season.
The 32-year-old will head to America to consult with his long-time specialist with a decision on whether he will play in the season-ending Dubai World Championship later this month expected next week.
"He has felt pain before, but he felt in severely enough," said Casey's manager Guy Kinnings.
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"We always agreed that if he felt that he would stop. He is going to withdraw from next week and get back and see the specialist who he has been working with and get it scanned and have a look and see.
"He is sufficiently concerned to do that straight away. He doesn't know if this means recurrence and out for a while or just a worrying tweak."
In a bid to remain in the hunt for a maiden order of merit title, Casey returned to action at last week's Volvo World Match Play Championship after three months on the sidelines.
He lost all three matches in Spain but was six under par through three rounds in Shanghai despite insisting all week he had still not fully recovered from the muscle injury.
After after just two holes of his fourth round he was forced to withdraw as a precaution and he has also pulled out of next week's Hong Kong Open, the penultimate event of the European Tour season.
Despite his lengthy spell out of action, wins in Abu Dhabi and at May's BMW PGA Championship at Wentworth had left Casey fifth in the Race to Dubai and well in touch with leader Lee Westwood.