Thanks for replying to my post....
At a glance I would lean towards keeping Rollins and Joba.
When you look at it Greinke hasn't been all that great in the past as he is this year. In a keeper league his value will taper next year and the next and so on which mean Joba and him will become very equal and I personally think Joba will do better in the long run (just not this year of course) and the fact that Joba has played less years also make for better value in a Keeper.
As far as Rollins and Tejada......they have both been around a while and in this case I feel both start taking hits due to years they have played (veteran status).....so it really boils down to Tejada (Power) or Rollins (Speed-SB's).....
IMO though I really think Tejada might be done soon even though he is still playing lights out this year. For this trade though based on this year I would want Greinke/Tejada but after this year I would go with Rollins/Joba.