At Te I like Pitta. Coming off their bye week, I think the Ravens will try and get Pitta more involved as they did at the start of the season. Manning is able to get the ball downfield to Moore, Decker, & Stokley a lot more leaving Tamme fewer chances plus there is always Dreessen to steal some receptions from Tamme as well.
At Flex I would go with Roberts. With the defense focused on stopping Fitzgerald, Roberts will see a lot more looks plus the Packers are without Charles Woodson.