Tim Herron hits out of a bunker onto the 17th green during the opening round of the Byron Nelson Championship golf tournament, Thursday, May 15, 2014, in Irving, Texas. (AP Photo/Tony Gutierrez)
The gallery looks on as Jordan Spieth chips onto the third green during the opening round of the Byron Nelson Championship golf tournament, Thursday, May 15, 2014, in Irving, Texas. (AP Photo/Tony Gutierrez)
Martin Kaymer of Germany tees off of the first hole during the opening round of the PGA Byron Nelson Championship golf tournament, Thursday, May 15, 2014, in Irving, Texas. (AP Photo/Tony Gutierrez)