Playing in his first U.S. Open, Duangmanee made his fourth double bogey of the day on the long par-4. But the beauty of the U.S. Open, as USGA CEO Mike Whan will repeatedly tell you, is its openness. At Springfield Country Club in Ohio on June 2, where several pros tried and failed to qualify for the U.S. Open, Duangmanee shot 68-67 to punch his ticket. So I've been keeping an eye on how the best in the world do it, so I'm going to use that going forward." On a day when Oakmont ejected players left and right, including some of the best in the world, Duangmanee had opted to grind.