Phil Mickelson will make his first start since his runner-up finish at the US Open when the Greenbrier Classic tees off this week. 
                                
Phil Mickelson: Greenbrier improvement 
 
 
The  43-year-old missed the cut in his previous two starts at the  Old White  course and will look to defending champion Ted Potter - his  first  round playing partner - for inspiration after he won the title in a   play-off in 2013. 
Fellow  Americans Webb Simpson, Bubba Watson and Keegan Bradley  all take part  too, as well as the US Open's lowest-scoring amateur  Michael Kim, who  is playing on an exemption. 
In total, the field includes 13 major title winners and 13 of the 30 top players in the world. 
The international field is led by Canada's Graham DeLaet,  Australia's  Stuart Appleby, England's Brian Davis and Ryo Ishikawa and  former world  number one Vijay Singh of Fiji. 
Mickelson and Potter will be joined by Watson in their playing  group,  with the former Masters winner making his first appearance at the  Old  White course. 
Other high-profile players taking part are Tom Watson, the 2014  USA  Ryder Cup captain, 2011 winner Scott Stallings, Billy Horshel and  Boo  Weekley. 
Former Open champion Louis Oosthuizen will make his Greenbrier debut and tees off alongside Charles Howell and Ken Duke. 
Potter claimed his maiden PGA Tour title at the event last year  when he  edged out Troy Kelly in the third hole of their play-off.
 
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