Originally Posted by Chas Tennis
Do you have a link describing what strong continental and weak continental grips are?
Just my description.
I started my swing with a "strong" Continental grip (which I think of as a bit more counter-clockwise than Continental, in between the Continental and Eastern backhand grip).
After the swing my grip had shifted about a 1/4 inch or so clockwise towards a "weak" Continental (between the Continental and Eastern forehand), but not quite a full forehand grip.
As such, I was getting some spin on the serve as I had not moved towards
a full forehand grip (Other players with similar problems shift to a full forehand grip and lose spin.)
It was important to resolve the grip shift issue as it's usually indicative of a serve that is not fully smooth, relaxed and fluid.
I think it's important to finish the service motion with the exact same grip that started the service motion.