3-man committee in Bills backfield?

"The Bills’ running back corps has all the potential to devolve into a muddy three-person committee dependent on the situation and riding the hot hand," The Athletic's Joe Buscaglia writes. We know RBs Devin Singletary and James Cook will have a role in this backfield, but Buscaglia believes RB Zack Moss could be an "early-down threat to Singletary" and the goal-line back. That, of course, would put a major dent in Singletary's fantasy value. Buscaglia also says that Cooks' role "could be smaller than some expect."