Poor, poor Dustin Johnson. The 30-year-old sat at 4 under for the weekend at the U.S. Open headed into his 18th and final hole, which 21-year-old Masters champion Jordan Spieth had just birdied to take a lead at 5 under. After a decent shot from the tee, Johnson set himself up wonderfully with a beautiful second shot that found a whole bunch of green. Johnson had a 12-foot eagle putt sitting between him and glory: If he sunk it, he’d have won the U.S. Open with a walk-off eagle, his first career major tournament victory. He was unable to sink the putt, however, but was left with a bunny for birdie to