TENNIS PROS

I dabbled in tennis years ago but I took lessons from a woman so this question never came up.

Lately, I've noticed an unnamed tennis pro who, whenever I go by and he's teaching, often has his shirt off. Even on quite chilly days.

But, I've also noticed it's usually when he's working with a cute gal. If it's a man on the court with him, he isn't always barechested.

He does have a nice physique. I'm wondering if he's showing it off just a bit, maybe? Do all tennis pros do this? How about golf pros?