Bryson DeChambeau reportedly lost his temper at a fan after his dramatic loss to Patrick Cantlay in a six-hole playoff at the BMW Championship on Sunday.
According to Kevin Van Valkenburg of ESPN, a fan yelled "Great job, Brooksie!" to him as he walked off the course.
"You know what? Get the f--k out!" DeChambeau responded.
Van Valkenburg said the golfer "had rage in his eyes" while adding "it could have gotten ugly really fast."
DeChambeau has been the subject of many taunts in recent months because of his rivalry with Brooks Koepka, even if they agreed to squash their feud.