The short answer? A lot. Since the 2005 U.S. Open, the course has undergone a major renovation under Bill Coore and Ben Crenshaw. Gone is the traditional thick U.S. Open rough and in its place are sandy areas filled with wiregrass bushes and natural vegetation. The course can also be stretched out to 7,565 yards now, making the par-70 layout the longest venue per stroke in U.S. Open history. Oh yeah, the famed Donald Ross-designed green complexes are still diabolical. This should be a fantastic -- and unique test -- for the world's best players.