Hi Carlos,
That’s great that you are enjoying the Par Gerell course. With this kind of forehand grip it makes it much easier in the rally to connect cleanly with the ball and gives the correct bat angle so youbcan hit in all directions. With the backhand grip which is needed for the Pär serves it gives the right bat position to play backhands and when you exegerate this grip it can ber very effective for the serves as Pär shows.
I hope I understood your question properly but please correct me if that wasn’t exactly wjat you wanted to know.
Tom
