Published: Jul 29, 2011 12:42 AM EDT
Updated: Jul 29, 2011 6:30 AM EDT

WHITE SULPHUR SPRINGS, West Virginia (AP) - Trevor Immelman shot a 6-under 64 Thursday for a one-stroke lead after the first round of the Greenbrier Classic.

The former Masters champion carded seven birdies and a bogey on the redesigned Old White TPC course for his best round of the year. The South African missed the cut in last year's inaugural event and is seeking his first top-10 finish since having wrist surgery in 2009.

Gary Woodland, Billy Mayfair, Derek Lamely, Webb Simpson and Steven Bowditch each shot 65, while four others had a 66.

Phil Mickelson, who can take over the FedEx Cup points lead with a win, shot an even round that included five birdies and five bogeys.

Stuart Appleby, whose 59 in last year's final round won the tournament by one shot, had a 71.