In a PPR, which of these RBs do you think has the best breakout/upside potential as a bench stash? Wendell Smallwood, Alex Collins, Jamaal Charles, Jerick McKinnon

Alternatively, what about Jacquizz Rodgers as a Doug Martin handcuff?

My other RBs are Martin, Tevin Coleman, Tarik Cohen and Alvin Kamara. I picked up Smallwood hoping he could sub for Martin (with Coleman and Kamara on bye week), but when Smallwood turned up on the injury report, I decided to gamble on Martin - that worked out ok! Could swap now without cost before lineups lock