This article is from the Table Tennis (Ping Pong) FAQ, by ttennis@bu.edu with numerous contributions by others.
3.8.1 In singles, the server shall first make a good service, the receiver shall
then make a good return and thereafter server and receiver alternately
shall each make a good return.
3.8.2 In doubles, the server shall first make a good service, the receiver shall
then make a good return, the partner of the server shall then make a
good return, the partner of the receiver shall then make a good return
and thereafter each player in turn in that sequence shall make a good
return.
 
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