Rule 4.2 Doubles

At the beginning of each game in doubles, each side informs the referee of the order of service, which must be followed throughout the game. Only the first server on the first serving team may serve the first time up. This player must continue to serve first throughout the game. When the game’s first server is put out on his/her initial serve, the side is out. Thereafter, both players on each side shall serve until an out for each occurs. It is not necessary for the server to alternate serves to the opponents.

In doubles, the server’s partner must stand outside the side lines, astraddle the indicated service line, and may not enter the playing zone until the served ball passes him. A violation is called a “foot fault.”