Sam Burns fell apart during the final round of the U.S. Open at Oakmont on Sunday, and a controversial ruling on No. 15 may have contributed to his collapse.

Scottie Scheffler battled just to salvage a 71 — the sixth straight round over par in a U.S. Open for the No. 1 player — and then headed to the range with arms flailing while venting frustration on why the ball wasn't going where he wanted. He was seven shots behind and felt he was still very much in the hunt for a second straight major.

With three rounds of the U.S. Open at Oakmont Country Club complete, Sam Burns holds a one shot lead and will look to close it out on Sunday and win his first major championship. Burns entered the weekend with the lead after finding ways to tame some of Oakmont's challenges, firing a 65 to move to -3 on the leaderboard.