Summary: Keep the ball away from the team on defense. Learn how to keep the ball away from opponents in this free basketball lesson from an experienced player.
"Next we'll do ball protection. And what ball protection is, is keeping the ball away from the defender. And what you want to do is keep your body low like I said before, and your eyes on your defender on the goal or the rest of your team, and you protect the ball by keeping your arm down, and that way if they're trying to steal the ball, your arm is here to protect the ball, and also the rest of your body. You can always turn your body like this. Same with the left side. Keep your body low, knees bent, head up, and your arm down to protect the ball if they try to steal. You can always use this arm to distract them, and your body as well. And that's called basic ball protection. "
eHow Article: Basketball Fundamentals: Basic Ball Protection