No. The situation you described sounds more like a replay hinder. If your opponent has an offensive opportunity, the only window you (the defender) have to give is a straight-in shot and a cross court shot (a shot where the ball hits the front wall usually somewhere near middle, and travels to the opposite back corner). You don't have to give the entire front wall, you don't even have to give them a pinch shot. If you (the defender) are not blocking the straight-in shot or cross-court shot, and the ball hits you (or your racquet) this is most likely a replay. As long as you don't intentionally stop the ball with your racquet it's usually a replay. So to recap, if your opponent's shot accidently hits your racquet thats usually just a replay hinder. Just be sure not to stand directly in front of him at all times.