The leaders are the only golfers to post subpar rounds
There is a four-way tie atop the leaderboard after the first day of the U.S. Open.
Scott Piercy, Ian Poulter, Russell Henley and Dustin Johnson all shot a one-under 69 in Thursday's first round at Shinnecock Hills.
Jason Dufner is one shot back in fifth at even par.
Seven others are at one-over.
Phil Mickelson is at seven-over par, while Tiger Woods is at eight-over.