Phil Mickelson of the United States plays a shot off the third tee during the first round of the British Open Golf Championship at Muirfield, Scotland, Thursday July 18, 2013. (AP Photo/Peter Morrison)

Photo by: Peter Morrison

Phil Mickelson of the United States plays a shot off the third tee during the first round of the British Open Golf Championship at Muirfield, Scotland, Thursday July 18, 2013. (AP Photo/Peter Morrison)