
I'm just using a AA as an example. If anything, shortening it to 100 game actually proves my point more.
5 of the 48 players drafted in the 2015-2017 rookie drafts have made it to 100 games, though some like Draper, Amartey and Chol will get there (note not counting Mitch Hinge and Stengle because they were delisted Brisbane and their subsequent success is in the latter, mature age recruit category). So 8/48 = 17%
On the other hand, of the 55 19+ year olds drafted in the 2015-17 rookie drafts, 9 have played 100 games, of which another one (Banfield) will play 100th. So 18%.
And the quality of output is comparable. Sure Houston is an AA player, but mature agers drafted include Papley, Marshall, Baker, Mihocek and McDonald-Tipungwuti, all players who have gotten 10+ career Brownlow votes. 5/10 of the 100 games. Yet only 2 of the players have gotten 10+ Brownlow votes - Houston and Zurhaar. Draper, Amartey and Chol may get there, but no-one else will.
Of course, this is only half the equation.
So among 100 gamers the groups are roughly as good as each other.
But among most of the players who weren't 100 gamers, there is clearly far more value from drafting a mature ager.
27 of the 40 non-100 gamers of the 18 year olds played 3 or fewer games. (57%).
However, only 23 of the 45 non-100 gamers of the 19+ year olds played 3 or fewer games (51%).
I can extend the analysis out to other years but you run into expansion draft issues, and pre-expansion teams different rules, and more recent it's a bit unfair as it's hard to see careers play out. But you can adjust for these factors spending more time on more analysis, and the point I'm making would still hold true.
waaait. the age of the player isnt so important. Im not sure how this became an 18 vs 19+ age thing. Are we not discussing getting rid of 'depth' players to allow us to try more 'development' players? Its fine to test if a quality mature VFL player is able to make the next leap in performance when put into an AFL environment - Picken, Boyd, Morris, etc... all came via this pathway. Great examples of development players that actually developed and improved our best 22.
OTOH you have players that have proven to not be up to the grade at other clubs and continue to stagnate at ours (Poulter, Baker etc...), or have had their time with us and not entrenched themselves in the 22.
How long do we want to keep these guys on the list in the name of stability/depth/good bloke/trainers or whatever?