Panthers' DeAngelo Williams doubtful for Sunday

Carolina Panthers head coach Ron Rivera said Monday that running back DeAngelo Williams will start the week as doubtful for Sunday's game.

The good news is that Williams is only dealing with a sore ankle, as there does not appear to be any structural damage. 

NFL Network's Ian Rapoport reported earlier Monday that Williams is week-to-week with a sprained ankle.

Rivera also said he expects to have running back Fozzy Whittaker back at practice Wednesday, but isn't sure about the status of Jonathan Stewart just yet. Both players were held out of the Panthers' Week 4 loss to the Baltimore Ravens.