Rory McIlroy eyes his putt on the 18th green during the pro-am of the Wells Fargo Championship golf tournament at Quail Hollow Club in Charlotte, N.C., Wednesday, April 30, 2014. (AP Photo/Bob Leverone)
Rory McIlroy signs autographs for fans as he finishes his round in the pro-am of the Wells Fargo Championship golf tournament at Quail Hollow Club in Charlotte, N.C., Wednesday, April 30, 2014. (AP Photo/Bob Leverone)
Rickie Fowler hits from the fairway to the 16th green during the pro-am of the Wells Fargo Championship golf tournament at Quail Hollow Club in Charlotte, N.C., Wednesday, April 30, 2014. (AP Photo/Bob Leverone)
Phil Mickelson watches his tee shot travel to the sixth green during the pro-am of the Wells Fargo Championship golf tournament at Quail Hollow Club in Charlotte, N.C., Wednesday, April 30, 2014. (AP Photo/Bob Leverone)
Rory McIlroy grimaces as he hits from the fairway to 16th green during the pro-am of the Wells Fargo Championship golf tournament at Quail Hollow Club in Charlotte, N.C., Wednesday, April 30, 2014. (AP Photo/Bob Leverone)