The 2011 U.S. Open is in full swing now, and an American is atop the U.S. Open leaderboard early on in Thursday's action. Ryan Palmer, a 34-year old from Texas, is off to a fast start, with three birdies in his first 10 holes to go into sole possession of first place at three-under par.
A group of three is right behind Palmer at two under, including Chez Reavie, Johan Edfors and Jeff Overton. A host of others sit back at one-under, including defending champion Graeme McDowell. Here is an updated leaderboard.