I'm playing 3.0 USTA league tennis. And I'm starting to develope a 100mph or more forehand as an aggressive baseliner. When I set myself up for hitting the ball that hard, I'm focused on the ball and really don't know where exactly the opponent is. A few times I've hit it really quite hard directly at him, he drifted into the strike zone. He had no choice but to defend himself and bat it away, giving me a point. It then occurs to me that the net position is really quite a valnerable place to be. What are you going to do with a 100mph ball coming at you, place it in a particular spot? I don't think even the professionals can do that very well. So I have to wonder how acceptable is it to hit those kind of hard balls directly at the opponent? Are there any liability issues to worry about? Or is that an obvious risk inherent in approaching the net? Thanks.