Graeme McDowell, of Northern Ireland, hits a drive on the 16th hole during the first round of the U.S. Open Championship golf tournament Thursday, June 14, 2012, at The Olympic Club in San Francisco.

Graeme McDowell, of Northern Ireland, hits a drive on the 16th hole during the first round of the U.S. Open Championship golf tournament Thursday, June 14, 2012, at The Olympic Club in San Francisco.