Cape Town - Jon Rahm was handed an unusual one-shot penalty on the second day of the PGA Championship after his shoe brushed against the ball.

LIVE: 100th PGA Championship - Round 3

Rahm was looking for his ball in the rough on the par five 17th after marshalls had failed to spot where it had landed in the long grass. While searching, his foot made contact with the ball. 

The rules state that an offence has occurred if the player or his caddie causes the ball to move and officials decided that his had happened, despite the Spaniard disagreeing and no advantage being gained.

"I definitely felt I touched it with the top of my foot. I know I touched it. I don't believe I moved it all," Rahm told the official.

"Nobody was marking where the ball was. There's nobody telling me where the ball is."

Rahm still managed to par the hole in his round of 67, as he moved to five under overall - five shots adrift of halfway leader Gary Woodland.