Australian friends Stuart Appleby and Robert Allenby are also paired together, as are Boo Weekley and Bubba Watson, former high school team-mates.

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Kenny Perry, Boo Weekley, JB Holmes, Ben Curtis and Chad Campbell were the other American victors, while debutant Hunter Mahan halved with Paul Casey.

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Also at 11 under was American Kris Blanks, with countrymen Jeff Overton and Boo Weekley 10 under and US Ryder cup captain Corey Pavin at nine under alongside Swede Carl Pettersson, former Masters champion Zach Johnson and John Mallinger.

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