Phil Mickelson has a record six runner-up finishes at the U.S. Open, the most recent coming a year ago at Merion. However, if he can manage to claim the one major title that's eluded him, he'll become the sixth player to win all four professional majors. A lot of factors seem to be working against Mickelson, though, as he arrives at Pinehurst without a top-10 finish on the PGA Tour this season and amid an ongoing FBI investigation into possible insider trading. One prediction we can safely make? Win or lose, we'll hear the phrase "career Grand Slam" more this week than ever before.