Rule 4.5 Changes of serve

A server continues serving until he/she or his/her side makes an out. When the server or the side loses the serve, they become the receiver or receiving side, and the receiving side becomes the serving side; and so alternately in all subsequent services of the game. Outs are made by:

The server makes an out serve under Rule 4.3.D.

The server makes two fault serves before executing a legal serve under Rule 4.3.C.

The server hits his/her partner with an attempted return.

The server or his/her partner fails to keep the ball in play by returning it as required by Rule 4.4.C.

The server or his/her partner commits an avoidable hinder (See Rule 4.8).

In doubles, the side is retired when both partners have been put out, except on the first serve of the game as provided in Rule 4.2.A.