I'm playing a match against this guy. I'm serving, 40 - Love. So, I serve and, after an exchange of several groundstrokes, the ball hits another ball on the floor on my opponent's side. Obviously, he couldn't hit it back. I say I won the point (and the game), he says the point has to be repeated. Who's right? Btw, we repeated the point. No big deal, just want to know.