Defending champion Brooks Koepka struggled to find momentum early in his final round at the US PGA Championship as leader Dustin Johnson headed out on Sunday.
Koepka has won the tournament in each of the past two years and talked a good game after Saturday's third round, seemingly intending to increase the pressure on Johnson.
But the four-time major winner made an unconvincing start and was soon in trouble at the second, scrambling to a first bogey of the day.
That setback saw Koepka fall back to a tie for 11th on six under and suddenly facing somewhat of an uphill battle.
His woes at the second were exacerbated by a solid start from Johnson, who was four strokes clear of his rival after birdieing the first.
Playing partner Scottie Scheffler briefly pulled level with Johnson on nine under, yet the former world number one - whose only major win came at the 2016 U.S. Open - swiftly became the first player to reach 10 under.
Early pressure from further down the leaderboard came courtesy of Tony Finau and Bryson DeChambeau, who each reached eight under with birdie-birdie starts.
