I agree with the consensus here that a roster spot should be locked in this situation.  However, I had another situation come up today with regards to locked roster spots that I'd be curious to hear thoughts on.  I checked my team around 0:00 to see if any of my players weren't starting in the 0 p.m. games, and saw that Ellsbury was not going to be in the lineup (game hadn't started yet). On my bench I had Melvin Mora, who was going to be playing (game hadn't started yet). Of course, Mora is not an OF... but in my IF spot I had the ever-versatile Chris Duncan, who had already played. I was hoping I could move Duncan from IF to OF (in no way gaining an advantage by knowledge of what happened in his game) and then slide Mora in at IF. Alas, no can do.  I'm not mad about this in the slightest, but it did get me thinking that it would be cool if we could move players who had already played to different positions in our lineups as long as we don't remove them. You really don't get any knowledge advantage here, it just gives you some added flexibility. Anyone agree? Disagree?  