A few. Definitely. But in terms of actual sports performance, experience and skill are just as important as physical prowess. That is why most players will be between 24 and 32 or so. Most players in any pro team sport aren't good enough to go pro until they've had a few years in college.

In the case of tennis, playing in college is generally reserved for players who will probably never make in in the pros, because most can
t afford to sacrifice the critical years between 18 and 22. By 30, most have already dropped in the ratings or switched to playing doubles, even if their skills are better.

Cycling by comparison is about as high impact as skipping rope on the moon, which is why racers have longer careers.