The brisk winds, gnarly rough and slick greens were all expected. Those are the hallmarks of a U.S. Open, designed to be the toughest annual test in golf. So while Russell Henley’s perch atop the leaderboard came as a surprise — he missed the cut by six shots the last time he played Torrey Pines — absolutely everyone expected Brooks “Big Game” Koepka to be lurking nearby. Phil Mickelson was ready, too, until being interrupted by a phone going off three times as Lefty prepared to tee off at No. 13. “Seriously?” Mickelson pleaded. “Can we get someone to help him?”