Partner

(a) In doubles if the servers partner is not in the service box with both feet on the floor and back to the side wall from the time the server begins the service motion until the ball passes the short line.
(b) A served ball that hits the doubles partner while in the doubles box results in a fault serve. In Open play (one serve), this fault may be replayed one time only, per service. The second instance, on the same serve, will result in a hand out or a sideout.