Sounds like its between julio and mathews and although julio can blow up and mathews is up against tough def he is hot right now and Id go with him.
If brown is a go cause ben then go with Dez.
If you bench brown then dez starts and mathews goes to flex.
10 team ppr w big play bonuses
QB E. Manning
RB C Johnson, Forte, Sproles
WR Marshall, A.Brown, Decker
Bench: D.Brown, M.Bush, J.Rodgers, Amendola, D.Moore, Flacco