I had played tennis for years and served with Eastern Grip. ( I know, its bad but I had no formal instructor) I kicked off this year doing things right by using Continential Grip. I felt a bit weird at first but warm up to the new grip. I played only weekends and after the 2nd week, my hand gets sore when I grip the racket and other stuff like steerling wheel. I am loving this new grip but I have a feeling that my hand isn't loving it so much as I think the change in grip is causing my right hand to tense up and started to hurt to the point that I can't even twist open a gatorade cap. I had rule out other things such as new rackets and all. Does anyone felt this behavior change in their hand after going to Eastern grip to Continential?