The Rams designated Williams (ankle) for return from injured reserve Wednesday.
Williams suffered a high-ankle sprain on his only snap Week 1 and has been sidelined in the meantime. The Rams now has a 21-day window to evaluate the rookie fifth-round pick and determine when (or if) a return to action is possible. If he gets back on the active roster, Williams may be able to mix into the backfield behind Darrell Henderson with Cam Akers' (personal) status with the team up in the air.