I used to teach my 12 year old team to mark man for man when defending in the centres and wing. We even did 2 on 2 drills making sure the winger didn't get sucked in to the attacking centre.
Hall played centre for a very good team and I bet he used to jump out as a centre looking for interceptions knowing he had a good winger and full back to cover him if he missed.
My main concern is that I regularly see
Hall jumping out and then seeing a winger scoot in to score.
Hall is tactically naive by being caught out like this but also has his coach noticed this and spent time on it. Raynor was rarely caught out as he held his position and stayed with his winger.
Agar out