Los Angeles Chargers wide receiver Mike Williams has a small, nonsurgical fracture in his back that is expected to sideline him two to three weeks, sources told ESPN's Lindsey Thiry on Friday.
Barring a Super Bowl run, Williams' season is likely over.
Williams had been downgraded to out for Saturday's wild-card playoff game at the Jacksonville Jaguars. The Chargers said Williams would remain in Los Angeles to continue receiving treatment.
The sixth-year receiver had not practiced all week after being injured in the regular-season finale against the Denver Broncos.