If you can't grip it, you can't pick it up! Your hand grip strength is critical to any sport or fitness training program. Think about it: If you can't hold on to the ball, your opponent, or the weights you are lifting, then how fit are you?
Often, grip strength is simply overlooked because it is assumed it will improve automatically as you train. That simply is not the case. You have to work your grip just like every other muscle group. So get to it and pick up the grips that fit your needs.