When practicing for Thursday’s opening round of The Players Championship, a college golfer heckled the four-time major winner from behind the 18th tee box at the Ponte Vedra Beach, Fla., course, with McIlroy later taking matters into his own hands — literally.

Fields indicated that Potter has written letters of apology to several people: McIlroy; PGA Tour commissioner Jay Monahan; Brendan von Doehren, the director of PGA Tour University; and Scott Schroeder, men's golf coach at the University of North Florida. Fields would not disclose to Golf.com whether Potter was facing any disciplinary action.