Phil Mickelson reacts to his shot from the 10th tee during the first round of the U.S. Open Championship golf tournament in Bethesda, Md., Thursday, June 16, 2011.

Phil Mickelson reacts to his shot from the 10th tee during the first round of the U.S. Open Championship golf tournament in Bethesda, Md., Thursday, June 16, 2011.