Re: LaMarre and Greene. LaMarre signed before Greene and his signing was simultanious to Means breaking his finger. Dayton had no one with the range to play center field and LaMarre was sent there. Then Greene signed. He can play second, short, or outfield. Dayton really did not have a spot for him. On the other hand, Lynchburg was really short on corner outfielders. The only way he could have gone to Dayton was if he went there to play second base with Henry Rodriguez moving to third, but at that time, Frank Pfister was hitter over .290 at third.
The only full-season A players who have the range to play center are Means, LaMarre, Contreras, and Fellhauer (and Reed when he is active). There are some other guys who can play in a pinch, like Oliveras, but not everyday. I am not sure about Greene in center.
As far as Sappelt...he is hitting but Henry would likely be the first to go up. I have never been a Sappelt booster but you can't argue with what he has done this season. Still, he is likely to stay in Carolina.