12.—A fault may not be claimed after the next service has been delivered.
13.—The service may not be volleyed, i.e., taken before it touches the ground.
14.—The Server shall not serve until the Striker-out is ready. If the latter attempt to return the service, he shall be deemed to be ready.
15.—A ball is in-play from the moment at which it is delivered in service (unless a fault) until it has been volleyed by the Striker-out in his first stroke, or has dropped in the net or out of Court, or has touched either of the players or anything that he wears or carries, except his racket in the act of striking, or has been struck by either of the players with his racket more than once consecutively, or has been volleyed before it has passed over the net, or has failed to pass over the net before its first bound (except as provided in Law 17), or has touched the ground twice consecutively on either side of the net, though the second time may be out of Court.
16.—It is a let if the ball served touch the net, provided the service be otherwise good; or if a service or fault be delivered when the Striker-out is not ready; or if either player be prevented by an accident beyond his control from serving or returning the ball in play. In case of a let, the service or stroke counts for nothing, and the server shall serve again.
17.—It is a good return although the ball touch the net, or, having passed outside either post, drop on or within any of the lines which bound the Court into which it is returned.
18.—The Server wins a stroke if the Striker-out volley the service, or fail to return the service or the ball in-play (except in the case of a let), or return the service or ball in play so that it drop outside any of the lines which bound his opponent's Court, or otherwise lose a stroke, as provided by Law 20.
19.—The Striker-out wins a stroke if the Server serve two consecutive faults, or fail to return the ball in-play (except in the case of a let), or return the ball in-play so that it drop outside any of the lines which bound his opponent's Court, or otherwise lose a stroke, as provided by Law 20.
20.—Either player loses a stroke if the ball in-play touch him or anything that he wears or carries, except his racket in the act of striking; or it he touch or strike the ball in-play with his racket more than once consecutively; or if he touch the net or any of its supports while the ball is in-play; or if he volley the ball before it has passed the net.