Originally Posted by TheCanadian
What would you advise in the case of a kid who wants to play at a national/international level? I've read that Federer played 15 hours/week when he was 14.
You might see a lot of juniors playing a lot of hours of tennis.
You might also see a lot of injuries...
With kids, and growing bodies, sometimes less is better.
My son plays 8 hours a week, but if it is a big test week, it might be 4 hours.