Remember, if the racquet face is closed at the low point of the backswing, it should be vertical at contact, provided you swing from the shoulder with a fixed forearm and wrist.
Remember, if the racquet face is closed at the low point of the backswing, it should be vertical at contact, provided you swing from the shoulder with a fixed forearm and wrist.
记得，如果网拍面在背后拉拍的低点是关闭的，它在接触点应该是垂直的，假设你是固定前臂和手腕地从肩膀挥拍。