WATCH: Tennis player loses point for mocking opponent's grunting

Robin Haase couldn't take it anymore, and the chair umpire made him pay

Sometimes enough is enough.

During the Prostejov Challenger, an event in the ATP Challenger Tour (basically the minor leagues for tennis), Robin Haase was in the middle of an intense point with Gonzalo Lama.

Lama was putting everything he had behind his shots, and you could tell from the loud grunts he was letting out every time he struck the ball.

After several shots back and forth Haase had heard enough, and he let out a piercing scream of his own, clearly intended to mock his opponent.

The chair umpire recognized the tone and called "hindrance" on Haase -- causing the point to go to Lama.

Chalk it up to things you only see on the Challenger Tour.

Haase went on to lose the match, 6-3, 6-3.

Wink of the CBS eye to Reddit

Robin Haase had heard enough grunting. Screen Shot/Chriz2k