oserver
Professional
But don't kid yourself and think you're in a path to a discovery. IMO it has very little chance for that. And comparison to open stance fh is absurd.
Comparison to open stance fh is not absurd at all. I wrote this paragraph in a paper titled "Open Tennis Serves (open stance or grip or both)" on my linkedIn page -
https://www.linkedin.com/pulse/article/20140903061426-139904838-open-tennis-serves?trk=mp-reader-card
"Lets focus on the left hip muscle for a moment (for the right hander, using platform stance or pin-point stance as an example.) If a server's stance is closed and two feet are lined up with path of the serve (many recreational players do this way), the left hip muscle acts as mainly a support function, not much rotational movement is provided by this muscle. More advanced players take the back feet clockwise further so the left hip also becomes a rotational focus point, contributing to angular momentum generation. This is an advanced movement to apply the proven technology used in open stance ground stroke. If we simplify this using the letter x to represent arms and legs, the cross point as the left hip. In lower level serves the x is rocking back and forth roughly in a flat plane, but the advanced serves the X is rotating while rocking back and forth, the left hip is not just acting as mainly a support, but can provide much needed angular momentum for generating more spin and pace. Apply this principle, when one open the grip (or stance) toward semi-western, your body from toe to fist tend to do more X, less x. This is one of the reason to explain why when I did open tennis serves, I did not serve worse (at least, many times better) than I was using closed stance and grips."