I think there are two primary reasons Tucker fell to 29 in the draft, even though he was a first team all american.
1) He is a five year player, and the conventional wisdom says that 18-19 years olds have more up-side potential than 23 year olds. Kerr stated that he didn't agree with the conventional wisdom in this regard.
2) Tucker is a bit of a tweener; he is a power forward in a shooting guard's body. This didn't stop him from being a dynamite college player, but will it stop him from being a dynamite pro?