The kill the grass between the legs basketball scoring drill is designed to help the player work on their ball handling, but also their ability to score off of the dribble. If the player is not a good ball handler, then they will not be able to get into their shot off of the dribble.
This basketball drill is going to make sure that the player is really working on their ball handling before going into their shot. Also, it is a different feel coming into your shot off of the dribble, compared to catching and shooting. This drill will help you develop the muscle memory and mechanics for shooting off of the dribble.