if a foot is between line and net, or if steps into the zone after hitting ball.
scoring and winning: a team gets a point when they win a rally that they served. when a point is won, the players of the winning team switch sides. the first team to 11 points wins, but you have to win by two points.
the serve: the player on the right always serves first. the ball must contact the paddle below the waist and must land in the diagonally opposite court, past the non-volley line. the player must hit the ball without bouncing it first. both players on a team will serve before the service 