The reason for this is that players who use too much wrist and forearm are usually coming into the contact area with an open face racquet and are trying to close it or roll up and over to get the racquet vertical.

• 会这样的理由是使用太多手腕和前臂的球员通常带著开放球拍面进入打击区而且正尝试关闭球拍面或者卷上超越让网拍变垂直。