There is one notorious cheater on the PGA Tour, according to an anonymous Tour pro's article in Golf Digest.

In the wake of Lexi Thompson losing a major over a controversial penalty related to marking her ball on a green, and Phil Mickelson's comments that some pros are "loose" with marking balls on the Tour, one Tour golfer has come forth with some striking comments on the subject.

"There's exactly one guy who is known to mismark his ball by two or three inches," the author says. "Ask any player about cheating, and they'll all tell you the same name."

The author says they were recently paired with the player in question and witnessed the mismarking: "Using his hand to obscure the distance behind the ball, he picks up his coin so fast that you almost can't be certain of what you've just seen."

While the author didn't name any names, he listed several details that could tip off ardent observers to the identity of the golfer in question, including that he uses a long putter and wears loose shirts possibly to obscure another method of cheating: anchoring the putter to the body.

After the round with the player, the author said they refused to sign the player's scorecard because he anchored his putter, leading to a dispute in the scoring trailer.

The author also says the player was in a group with a friend of theirs in a recent tournament, in which there was a rain delay. When the horn sounded, the author's friend and a second player decided to finish the hole, while the player in question stopped with his ball "in a gnarly divot hole in the fairway."

When play resumed in the morning, the player's first shot was quite incriminating in the eyes of the author.

"My buddy is waiting by the green and says to his caddie, 'No way this mother------ puts the ball back where it was,'" the author wrote. "Sure enough, the shot comes sizzling into the green and spins back 10 feet — which is impossible from a divot."

With all these details, regular viewers of the PGA Tour might be able to deduce the identity of the suspected green-cheater. But the author says it's already widely known among players.

"This dude knows he's a cheater, and he knows that everyone knows he's a cheater," the author wrote.

I'll be watching the greens a little more closely when the US Open tees off on June 15.