Changed my ball roll quite a bit, and is the only wrist brace I've ever used (and I've used a bunch) that induced pain.
I think my problem was you have to be very careful about the span with this brace, more so than others. It's very restrictive, and all of a sudden I felt like I was stretching to throw any of my equipment. I started getting major pain at the base of the thumb and had to bag it.
That's too bad, because it did seem to ease the pain I usually get (top-back of the wrist).
The other thing it did to me was cut down on tilt substantially and my PAP actually moved about an inch. Once that happens, of course, you've got equipment acting completely differently from the way it was originally intended to roll.
It's a quality piece of equipment, but just be ready to do a lot of CAREFUL refitting if you intend to use it.
Jess