The kids on the team I coach had a question the other day that I wasn't sure of the answer, and an hour reading rules online hasn't turned up anything. The question: does the receiver of serve have to let the serve bounce before returning it? I.e if one of my weak players is in a match with someone with a very weak serve, can he just stand at the net and slam it? I remember reading somewhere that it was legal, but considered poor sportsmanship to do this. Is there actually a rule?