If you can't block ki blasts or bounce off the ground then you need to read the manual. Besides, who can't dodge ki balls? These are spammable, much like every single thing in the game. And another thing, if we say, you need to have at least 25% Ki left to fire them for free then? Another thing for you, (yes again) if you fire a gen ball you have to switch back to melee again if you want a swift attack. This is only usable by PROS and pros already own you with any other char. And as I wrote, you don't get downed by a throw unless you're completely out of ki and you actually USE the damn left mouse button (don't do that, it drains your ki and if he's not low on ki he WILL throw you) you deserve to get hit =P However, holding space will save you EACH and every time, giving you the edge if he's got ki ball, even if he doesn't lose ki by doing it.