Roger Federer meets Gael Monfils in training at his most painful point

That went wrong, however, and a blow from the Swiss hit his “victim” at the most sensitive point.

“Don’t try that at home”, Svitolina advised her fans on “Twitter” after the painful scene.

Federer’s comment in the tweet sounded more like a threat. “Sorry, Gael Monfils,” he wrote. “I’m out of my rhythm. We’ll try again in a few weeks.”

Svitolina proved last summer that things can be done better. This is what the scene should look like: