The server shall then project the ball near vertically upwards, without imparting spin, so that it rises at least 16cm after leaving the palm of the free hand and then falls without touching anything before being struck.

• 发球员须用手将球几乎垂直地向上抛起，不得使球旋转，并使球在离开不执拍手的手掌之后上升不少于16公分，球下降到被击出前不能碰到任何物体。