Cheetah, look at his elbow pointing to the right, his forearm is in a neutral position. His thumb/palm is also a good reference point, it's parallel to the court surface. Again, if he pronates from that position the racket would be upside down, with the tip pointing to the ground. For example, stretch your arm to the side while facing the net. If you pronate your thumb points down and palm faces back fence, if you supinate, thumb points up and palm faces forward, and finally, if you keep it neutral, the thumb will point forward and the palm will face the ground, this is the position Fed shows. ''Nobody agrees'' sorry, wasn't aware that you speak for the whole board.