Lugo is the Sox SS. At least on the payroll. Lowrey is a better choice, but is on the shelf until About July (probably). Green is a journeyman infielder that has his 15 minutes. I like what he has done (decent bat, OK glove, good range). But he has an arm like Nomar. Specifically, he makes throws that he should not, and makes bad throws when he should make a good one. I think Green should see the majority of playing time until Lugo has recovered his strength and had enough practice to be able to make game situation plays reliably. When Lowrey is back in shape, assuming no one else has stepped up big, he should be the Sox every day SS.