By Frank Pingue OAKMONT, Pennsylvania (Reuters) -Overnight U.S. Open leader J.J. Spaun shook off his first bogey of the week to reach the midway mark of his second round level with Thriston Lawrence at Oakmont Country Club where Rory McIlroy was flirting with the projected cut line.

OAKMONT, Pa. (AP) — J.J. Spaun is still new enough to the U.S. Open, and a newcomer to the brute that is Oakmont, that he was prepared for anything Thursday. He wound up with a clean card and a one-shot lead on an opening day that delivered just about everything.

Spaun went out in a record 31 and posted just the eighth bogey-free round in U.S. Open history at Oakmont to take the early lead on Thursday.