Rory McIlroy, of Northern Ireland, hits from the fourth tee during the first round of the U.S. Open Championship golf tournament in Bethesda, Md., Thursday, June 16, 2011.

Rory McIlroy, of Northern Ireland, hits from the fourth tee during the first round of the U.S. Open Championship golf tournament in Bethesda, Md., Thursday, June 16, 2011.