First base is tough, or possibly I am giving away too much of my theory on roster building. There is no 1b left on the market who I would consider a difference maker. I suspect each organization has 3 or 4 players comparable to what is left of the first basemen.
So the notables include: Lonnie Wilkinson Tomas Espinosa and Jimmie Castillo
Mostly aging vets looking for one last shot