Phil Mickelson reacts to a missed birdie putt on the 17th hole during the first round of the U.S. Open golf tournament at Merion Golf Club, Thursday, June 13, 2013, in Ardmore, Pa. (AP Photo/Morry Gash)

Photo by: Morry Gash

Phil Mickelson reacts to a missed birdie putt on the 17th hole during the first round of the U.S. Open golf tournament at Merion Golf Club, Thursday, June 13, 2013, in Ardmore, Pa. (AP Photo/Morry Gash)