Luke Donald could lose number one spot this weekend

Luke Donald
© PA Photos
Luke Donald's position atop the world golf rankings looks in doubt after a below-par start to the Heritage Open in South Carolina.

Englishman Luke Donald could drop to second in the world rankings after a sluggish start to the RBC Heritage event in South Carolina.

The 34-year-old, who must finish in the top eight at Hilton Head to remain number one, is eight shots off the lead of Chad Campbell, Vaughn Taylor and Colt Knost after a four-over opening round of 75.

Donald spent 40 weeks at golf's summit after a consistent 2011 before being deposed by US Open champion Rory McIlroy in March.

However, Donald regained top spot after triumphing at the Transitions Championship in Florida two weeks later.

A finish outside the top eight this weekend would see Northern Irishman McIlroy again move ahead of Donald in the world standings.

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