One of Randy Carlyle's major challenges as the Leafs' head coach will be implementing a defensive scheme that somehow cuts down on the massive goals-against totals that have doomed the Leafs for years.He can start by actually teaching the team about defence, something former coach Ron Wilson felt was unnecessary, apparently. In fact, Wilson didn't teach the Leafsabout the defensive zone when he was in Toronto, not even where in the rink it was located. Poor Cody Franson was so confused he thought it was in the press box.To combat the utter ignorance on his roster, Carlyle drew up a map of the defensive zone to help teach the Leafs how to play defence. It wasn't supposed to be leaked to the public, but I found a crumpled up copy in a trash bin after Leafs practice on Thursday. Perhaps it was tossed aside by a certain bald-headed, injury-prone centre on his way down to the minors.