hello all,I have played tennis for five years now, but I have a big problem now, simple said my forehand does not have too much power.sometimes I feel my racket just slip from the ball.does not a feeling that the ball touch the racket for a long time. I have watched a lot of videos on the internet ,some slow motion from ATP players,I find out may be is because my hip joint does have right postion when I swing. I perfer to use open poistion or semi-open poistion,I use semi-western grip sometimes east grip. should my hip joint go outside more ? should my hip joint move or dont move?
anyone knows about it ,please help me!