Serving
Do I have to throw the ball toward myself to do the zhang jike pendulum serve
Hi Pakorn,
In theory you should throw the ball almost vertically. However in practice you can throw it a little in towards you to make the serve more effective.
Question actions
Varying the speed is different from varying the length. You can have a fast short serve and a slow short serve. You can also have a fast long serve and a slow long serve.
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