Mickelson made a charge during the final round at the HP Byron Nelson Championship, but bogeyed the 17th and 18th, finishing T-7th. He then withdrew from the Memorial Tournament, citing mental fatigue, after a first-round 79. He was to be paired with Tiger Woods and Bubba Watson at the U.S. Open. He fought to make the cut in the U.S. Open, and finished T-65th. After taking a couple of weeks off, he played in the Greenbrier Classic. Putting problems meant a second straight missed cut at the Greenbrier and a third missed cut at 2012 Open Championship, shooting 73-78 (11 over par). He finished T-43rd at the WGC-Bridgestone Invitational. He then finished T-36th at the PGA Championship.