By Mark Lamport-Stokes OAKMONT, Pennsylvania (Reuters) - Little-known American Andrew Landry upstaged the game's biggest names by seizing an early three-shot lead at the U.S. Open on Thursday as play was twice suspended due to threatening weather. PGA Tour rookie Landy, competing for the first time in the year's second major championship, piled up five birdies in 13 holes on a rain-softened layout at Oakmont Country Club outside Pittsburgh to get to five under in the opening round. Twice Masters champion Bubba Watson was one of four players bunched at two under, the American left-hander having mixed five birdies with three bogeys after 10 holes.
