Originally posted by dodger87
I've seen lots of grappling clips where the guy tackles his opponent on to the ground, and most of the time they are just rushing towards them. Howcome no one tries to kick or knee them as when they rush towards their opponent their upper body is in a really low position.
momentum, a body in motion tends to stay in motion.

If he is going full steam ahead and you don't knock him out with your kick or knee expect to be on the ground. Even if you ko him, his momentum might still be enough to knock you over.

Learn to sprawl.