Here is my roster predictions, based on the preseason so far.
Ovie Mugehelli/ Brit Miller- Depends on who is doing better, seems like the FO hasn't made a decision yet, and Miller is showing some special teams work. On the other hand Ovie is a veteran fullback from Atlanta, Les Snead's old home.
DX/ Gibson- If Pettis doesn't count against the roster for the first two games, then the FO may decide to give one of them a chance, because of how they were injured during the preseason. I expect neither to get this last spot after Pettis's suspension, as DX is proving to be WAY to injury prone, and Gibson, well just doesn't preform.
Greg Zuerlein/ Das Boot(awesome nickname)