You'll find out when you start smashing it
Nope, proper lacrosse balls are solid
A quick google reveals that these seem to be NCAA specced balls, but it might be worth asking them if they are proper, solid balls:
http://zenithsports.com/product_info.php?products_id=14
Huzzah!
Also...
Told you so!
It could be a few things: tight hip flexor/quad, worse ankle mobility on that side...
If it also manifests when you're lying on your back, it's almost certainly at least partially due to quads and hips.
Fen (sorry I missed your post), I'd take a closer look at how you're squatting. Things like knee and foot alignment, and if you're flat footed, can cause problems here.
Fen (sorry I missed your post), I'd take a closer look at how you're squatting. Things like knee and foot alignment, and if you're flat footed, can cause problems here.