I figure a lot of it comes down to whether they want to give Donaldson or Weeks/Sizemore another chance, and where Nakajima is most comfortable.
Yeah pretty much. I think they start with Naka, if he's good at SS, then they move Lowrie to 3B, and if Donaldson wows them, they can move him to 2B, if Weeks/Sizemore outplay Donaldson, they go vice versa. They have a ton of moving parts and options, but another scenario is could play Lowrie at SS, Naka at 2B and Donaldson at 3B. I think it's just a matter of who looks most comfortable where like you said, but Lowrie is reallllly adaptable.