Throw in fifth-round draft pick Zac Stacy -- a trendy fantasy sleeper -- and there are more questions than answers regarding the backfield roles.
Coach Jeff Fisher provided little insight this week, telling NFL.com's Ian Rapoport that the situation could be "playing two or three backs all the time. Which is good."
Slightly undersized, Pead and Richardson operate best in space while Stacy packs more punch as a decisive inside runner. The tea leaves suggest a "hot hand" situation between the former while the latter handles short-yardage duties.
Much like the Rams' wide receiver quagmire, the backfield promises to be vexing for fantasy leaguers throughout the 2013 season.