There are loads of female tennis players carrying a few too many extra pounds. Loads of skinny fat men in the pro ranks too. It's only really the top male tennis players who are serious athletic specimens + the Williams sisters and a couple of lesbians.
I'd say those involved in the elite levels of combat sports such as wrestling, boxing, mma, even sports like judo are the most impressive overall athletes (ignoring the obese heavyweights). Their combination of strength, speed and stamina is hard to match.