Mickelson missed the cut at the Masters for the first time since 1997. He failed to contend at the U.S. Open at Pinehurst in his first bid to complete the career grand slam. Mickelson's lone top-10 of the PGA Tour season came at the year's final major, the PGA Championship at Valhalla. Mickelson shot rounds of 69-67-67-66 to finish solo second, one shot behind world number one Rory McIlroy.