"I heard this pop-pop, and there it was sitting on top of this shirt," Lowndes said.
Masters 2013: Tianlang Guan closes memorable week as low amateur →
"I heard the sound of the ball hitting plastic and looked down," said Tom Lowndes, who was crossing the adjacent 15th fairway. "The ball was sitting right there on top of this hat."
Masters over, it's back to the books for Guan →