It was only earlier this year in the Carlton game where Treacy dropped like all of his marks and it ended up costing us. Voss can turn it around. Still young.Voss is an almost player, gets to the right place often enough, gives 100% all the time but .... drops marks, goes to water with his kicking too.
That work he did on the boundary line in the forward pocket to fend off the Geelong player and then centre the ball was superb stuff.
Treacy was having similar problems holding his marks last season and has turned it around to become a very good mark so there is hope for Voss to do the same.
There is a player in there if he gets his marking sorted out.