Just a few comments.
When you start, you cant actually read what the tutorial guy is saying as you are swinging at balls as they come and thats taking your focus, and when you swing, its cancelling the text thats appearing from the pictcher/tutorial guy
Needing to go to the pause menu to then quit, to then go back into the game is a bit of a weird flow too.
Overall though, visually its a quite game, and its fairly fun.