Why did we trade for duckett?

[celts32]

They need to start using him in short yardage. there is no reason to pound portis into the line on 3rd and 1 when we have that big boy sitting on the bench. Most 3rd & 1 runs result in either no gain or 2 yard gains. We should be keeping CP fresh so that he can make game changing plays. Ducket was good in those situations in Atlanta so lets give him a shot.