Fantasy Upside
Darren Sproles is a do-it-all back who can still carry the ball effectively but is more known for his pass-catching abilities. He can also return punts. He was added to the Eagles in the offseason and is now a weapon under offensive-minded HC Chip Kelly. Sproles has been lining up in the backfield and as a wide receiver and has also been working with the receivers a lot in camp, and it's becoming more and more clear the Birds plan to use him in a lot of ways.
Fantasy Downside
The downside to Sproles is LeSean McCoy's presence as the Eagle's bell cow, but this was something we knew the instant Sproles landed in Philly. Sproles is likely not going to be the direct backup to McCoy, that role should go to Chris Polk. Sproles will see get limited carries, but with McCoy and Polk around, it's obvious he'll be used in the passing game more, the biggest question is how much.
Bottom Line
Sproles is going to have some value in PPR leagues, but just how much remains to be seen. He's ranked 36th in our RB PPR rankings so he's going to have some use in deeper leagues in that format. But there are too many questions about his value in typical leagues that likely won't get answered until the season starts.