AUCHTERARDER, SCOTLAND - SEPTEMBER 23: Jimmy Walker of the United States, Phil Mickelson of the United States and Rickie Fowler of the United States walk the fairway during a practice round for the 40th Ryder Cup at Gleneagles, on September 23, 2014 in Auchterarder, Scotland. (Photo by Montana Pritchard/The PGA of America)