Murray -- who did not practice Wednesday -- is battling a case of turf toe, NFL Network's Ian Rapoport reports.
That said, per Jimmy Durkin of the Bay Area News Group, offensive coordinator Bill Musgrave said he's hoping that Murray could be back by Sunday, which offers at least some hope that the running back could potentially give it a go in the Raiders' 4:25 ET matchup against the Chargers in Week 5.