Sidespin Loops
In the late 1970s I went to several Seemiller camps. One of the things I learned there is that looping with sidespin was a good thing, and that a natural loop generally has something like 15% sidespin. This is for two reasons. First, the natural contact point of the ball is lower than the shoulder, so the arm is tilted down, and so it naturally contacts the ball somewhat on the outside, which puts sidespin on the ball. And second, if you meet a loop straight on with pure topspin, you are going up directly against the incoming topspin, and so it's better to contact it more on the side so as not to have to go up against it directly. (Here's a Tip of the Week I wrote last year on Sidespin Loops.)
There's even more to it than that. One of the things I've pointed out to some of my students is that you get a more natural hooking sidespin on your loop if you take the ball either early or late. If you take it early, your natural contact point will be more on the outside of the ball, since your arm will be tilted forward. (This is the right side for a right-hander.) If you take the ball late, you have a natural sidespin swing as your stroke tends to go more sideways. If you take it in the middle, then you'll get that natural 15% sidespin, but generally not as much as if you take it early or late.
There is value in these sidespins. If you take it quick off the bounce, and hook the ball as well, and go for a wide angle to the left (for a right-hander), the combination of these three make it an almost unreturnable shot - it combines quickness, sidespin breaking away, and wide angle.


 Photo by Donna Sakai


