I was serving and it slipped out of my hand and hit the ground and cracked right at 12 o clock. I think it was actually due to the isometric shape that less of the blow was deflected. I've done that with my head several times and haven't had any problems with it. I was reading on here about somebody reinforcing a racquet. I think I'm going to see if I can come up with something to patch it. If anybody has done this or has any ideas I'm open.