I believe you and I know you’re not gaming the system at all, and I try to accomodate everyone, but I don’t like to touch rosters after the game has already begun for that player. There has to be a line somewhere, and I think the start of the game generally is it, barring unusual circumstances. If I make an adjustment for you 20 minutes after the game started, in the future if someone asks me to make a similar move 30 minutes after the game has started, it’d be hard to turn that down given the precedent, and so on.
This probably works in your favor because by the time I saw this Pickens is still having a bad game at 1 point, so as your opponent, it would benefit me to stick him in this slot. But as commish, I have to draw the line somewhere, and the start of the game probably has to be it.