Scottie Scheffler and Xander Schauffele each had clumps of mud on their golf balls from the middle of the 16th fairway — the hardest hole at Quail Hollow — and saw their shots curve hard to the left, over the green and into the water, leading to double bogeys.

Scottie Scheffler, the No. 1 player in the world, called mud balls one of the most frustrating issues a professional golfer can experience.

World number one Scottie Scheffler hit out at the decision not to allow preferred lies, saying “mud balls” cost him two shots in the first round of the US PGA Championship.