how many types of serves in table tennis
Table tennis In game play, the player serving the ball commences a play.[35] The server first stands with the ball held on the open palm of the hand not carrying the paddle, called the freehand, and tosses the ball directly upward without spin, at least 16 cm (6.3 in) high.[36] The server strikes the ball with the racket on the ball's descent so that it touches first his court and then touches directly the receiver's court without touching the net assembly. In casual games, many players do not toss the ball upward; however, this is technically illegal and can give the serving player an unfair advantage.
Serve (tennis) A let occurs when a legally delivered ball lands in the cross-court service box having touched the net cord (but not the net post or any other object).[citation needed] Play stops immediately, and the server is allowed another attempt. The umpire (or opposing player when there is no umpire) will usually say "let" or "net" to signal to the server a let has occurred. Lets occur more often on first serves, as the server is more cautious on the success of a second serve.