The relationship is simple: The better you pick length, the better you are as a batsman. It's, at least, one third of the art of batting.
Yet, as a coach, I see many players struggle to pick length well. They hit balls in practice all day long and look technically sound. Then they go out in the middle and get caught playing forward to a back of a length ball, and spooning a simple catch up in the air.
People say things like "he's stuck on the crease", "he falls over" and "he's too defensive". While all these comments may be true, they are not the root cause. The root cause is often not picking the ball in time to get into the right position.
Do you recognise these symptoms in yourself?
Here's my solution.