The only other thing that comes to mind is if a rail kicks the ball in the air, and for a split second, you have the airborne time when the ball isn't experienceing the friction of the cloth.
Other then that, I would think that if a ball picks up natural spin off of rails, that the 2+ rail phenomenon might not be all in the players heads.
Not that it increases speed, but if the spin is a factor, i can see a player scratching their head wondering how the ball maintained a certain speed to well, off of rails that are goofy.
Other then that, I would think that if a ball picks up natural spin off of rails, that the 2+ rail phenomenon might not be all in the players heads.
Not that it increases speed, but if the spin is a factor, i can see a player scratching their head wondering how the ball maintained a certain speed to well, off of rails that are goofy.