I've seen it too. Just like I've seen the big girl with slow bat hit the further than the little girl with quicker bat. Pattar can you put the math to this. Spins effect on the distance the ball travels.At the same time reading a line drive hit right at you with back spin in the outfield can be a nightmare. I don't know how many times I've seen outfielders charge a ball only to see it sail right over their head.