U.S. Open leaderboard: Martin Kaymer holding off Erik Compton, Pinehurst chasers

The course is beating up the U.S. Open field in the third round, with plenty of bogey and double bogey spots all over the Carolina Sandhills. Martin Kaymer has not had the same form as the first two days, but he's holding it together well enough to stay out in front by five shots. It's been a battle for Martin Kaymer on the front nine of the third round at the U.S. Open, but he's still left the door firmly shut for any of the chasers deep down the leaderboard in the "B group" this week at Pinehu...