Week 2 at Miami
As of right now, Zach Moss is still out for Buffalo which means Devin Singletary will be the primary ball carrier again. Singletary's numbers were quality but he only had 14 touches. It did produce 80 total yards, but most of that yardage came on two long runs when Pittsburgh was in a prevent defense. The Bills were very pass-happy with 51 attempts while he only rushed the ball 11 times.
Singletary will face the Dolphins which have a quality run defense. They did give up 125 rushing yards last week including a 100-yard rusher, but that's what the Patriots like to do.
Since he will get most of the touches at running back, Singletary does have fantasy value. Start him as a high-end RB3 or flex for Week 2 and expect even more production in the passing game which upgrades his value in PPR leagues.