Lee may have several more years to play, but as a non-elite 1B approaching his mid 30's, he does not have several more years of being adequate. Derosa's season should be viewed as somewhat flukish, I doubt he just came into his own at 33. He's in his last year of his contract, and should not be extended, so either have him play out the season or trade him at a high point. I'd trade him. Theriot isn't going to continue to get better. He turns 29 this winter and has likely reached his peak, which was okay, but hardly special. His entire game is based on finding holes with singles and bloops. He hits nothing hard, and I don't see him maintaining these numbers very long. And at his age, we might expect his defense to get even worse, as middle infield is a young man's position. Soriano is what he is, and he is not going to get better. I doubt he improves defensively or in terms of consistent offense. He turns 33 this winter, and if anything he's going to just get worse. I think Fukudome should be better next year, but I wouldn't pencil anything in for him.