【课程内容】本节课堂是教你训练雨刷式正手。在切入正题之前，再一次明确一下什么是雨刷式正手。雨刷式正手和你通常打正手的方式有着相同的动作架构。脚的扭转、身体团绕、发力位置、槽形轨迹等与平时击球差不多。雨刷动作是在触球后那一刻开始的，当然，在击球前你的球拍是落在球的下方的。前臂与球拍约呈90度角，我在很多地方都提到过。我也制作过专题视频讲解过这些技术，随后查看一下。如果我们有了一个正确的架构，我们就说说击球后那一刻发生什么。没错，在击球后那一刻，你马上翻转你的手腕，就像在挥手再见；另外一种想法是你打开锁扣或门把。你不要真的用到手腕肌肉或关节去翻转球拍，这更多的是通过前臂的内旋，而不是其它组织。和发球的手腕内旋的不同，雨刷式正手手腕是向后靠，而发球时手腕是平直的。在你上翻手腕时，你的球拍会有一个180度的转动。假如你是右手球员，在击球点时球拍尾盖会朝向左边。刹那间球拍会翻边，拍尾盖最终指向右侧。这可以产生难以估量的球拍速度。在随挥段，你要允许你的肩膀和手臂转到左边。它会自然的挥向那个方向。雨刷式正手的随挥是到肩膀之下，大约在肚脐或腰部高度。打雨刷式正手的关键在于，在击球前，你不要上卷球拍或内旋手腕。要做一些艰苦的练习你才能掌握时机；而在老手看来，这一点也不难。刚开始训练时，你会发现很多球落入球网；这是因为增加了上旋，如果是这样，瞄着更高过网，直到你掌握安全的过网高度。To hit the windshield wiper forehand, use your normal setup on the forehand. Your pivot, unit turn, power position, and slot position will be the same as the forehand you always hit.The difference in the windshield wiper forehand comes immediately after you contact the ball. Of course, you’ll need to make sure your racket head is below your hand on the swing to contact.Your forearm to racket angle should be around 90 degrees. This is something that I talk about a lot in my videos and blog. I also made a dedicated video demonstrating this technique, check it out below.Now that we have the setup right, we can talk about what happens right after contact is made. Okay, so immediately after contact you’re going to flip your wrist as if you are waving “bye-bye”. Another way to think of it is turning a lock or doorknob.You don’t actually use wrist muscles or joints to flip the racket. It’s more pronation of the forearm than anything else.The difference between this type of pronation and the serve is that on the windshield wiper forehand, your wrist is laid back, while on the serve it’s flat.Once you “flip” the wrist, your racket will make a 180-degree rotation. Assuming you’re right-handed, on contact the butt cap of the racket should be facing to the left.But within fractions of a second, the racket will “flip” sides and the butt cap will end up facing the right side. This allows the player to generate an absurd amount of racket speed.For the follow through, just allow your hitting shoulder and arm to move to the left (for righties). It will naturally want to go in that direction anyway. The follow through on the windshield wiper forehand is often under the shoulder and close to the navel or waist.The main key in hitting the windshield wiper forehand is not to flip the racket (or use the pronation) until the ball contacts the racket. It takes a bit of practice to learn the timing, but it’s not that difficult if you are an experienced player.When first learning this shot, you may find a lot of your shots going into the net. This is because of the increased topspin. If so, aim higher over the net until you learn a safe clearance height.
