Pinehurst No. 2 is the site of this year's U.S. Open that starts Thursday. Much was made about replacing rough with the original sandy areas dotted with clumps of wiregrass for the previous U.S. Open at Pinehurst. But it's all about the domed, Donald Ross greens. That much hasn't changed. They've been called turtlebacks and upside-down cereal bowls. But they are a problem. And that's probably why a total of four players have broken par for the U.S. Open the previous three times at Pinehurst. Viktor Hovland is among those who say Pinehurst will be a supreme test.