Lowry adds 2 birdies and builds 4-shot lead at US Open

Shane Lowry, of Republic of Ireland, waves on the 18th hole during the delayed third round of the U.S. Open golf championship at Oakmont Country Club on Sunday, June 19, 2016, in Oakmont, Pa. (AP Photo/John Minchillo) (The Associated Press)

Shane Lowry, of Republic of Ireland, reacts after making a birdie on the 17th hole during the delayed third round of the U.S. Open golf championship at Oakmont Country Club on Sunday, June 19, 2016, in Oakmont, Pa. (AP Photo/John Minchillo) (The Associated Press)

Andrew Landry hits his tee shot on the 15th hole during the delayed third round of the U.S. Open golf championship at Oakmont Country Club on Sunday, June 19, 2016, in Oakmont, Pa. (AP Photo/Charlie Riedel) (The Associated Press)

Shane Lowry began the final day of the U.S. Open by making two birdies to cap off a 5-under 65 and take a four-shot lead into the final round.

Lowry made a 12-foot birdie putt on No. 15 and hit a superb wedge out of the thick grass framing a bunker to 7 feet for birdie on No. 17. He finished with a 6-foot par putt on the 18th and a pump of the fist.

The 29-year-old Irishman was at 7-under 203, four shots clear of Dustin Johnson (71) and Andrew Landry (70), who is trying to become the first player in more than a century to win the U.S. Open in his first try.

Lee Westwood and Daniel Summerhays each had 69 and were five back.