Which two? Roddy, Mendelhall, Harrison or Pierre Thomas?

I would go with Roddy and Harrison. Oakland's run defense is terrible, so if Harrison gets the carries he should put up good numbers. I don't like Mendenhall against Baltimore, and the Saints are a p first team, and as you said Bell gets the TDs. So that leaves Roddy White who had a bad game last week, maybe he can bounce back.