Ever since then Corbin has been asking to play tennis. I tried to teach him once... only that once, turns out I don't have the patience to teach a 4-year-old how to play tennis. But is has been a couple of years now and he is 6 and we saw a little summer tennis camp that the city was putting on for his age group and agreed to let him try it.
He ended up LOVING it! At first he couldn't even hit a ball he had bounced on the ground himself and by the end they were playing king of the court and could actually rally it once or twice before one of the kids missed or hit it too hard and sent it flying.