I think it's important to remember how young Lever is.
He spent his first few years in the AFL learning and developing in the 3rd tall / intercept defender role. We know how well he developed in this role.
Since joining Melbourne he's spent more time in a one on one / key defensive role, though we're only 3 rounds in. It takes time to learn and develop in new roles, not to mention adjust to new team mates and game plans.
I know in a few years time I'd like a defender to be capable in a number of roles and maybe this is what Goodwin is doing. Lever is an intelligent, talented pla