2.06.02 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.
場地入面有air resistance ,又有風,又有聲音,球點會拋得直?
球例講明係near vertically upwards,球后拋/直與否,只係程度問題/角度問題
