Los Angeles Chargers WR Mike Williams (back) was limited during practice Friday, Sept. 29, and has been ruled out for Week 4. RB Melvin Gordon (knee), OT Joe Barksdale (foot), LB Hayes Pullard (knee) and TE Sean McGrath (foot) fully participated in practice but are listed as questionable. LS Mike Windt (non-injury) fully participated in practice and is not on the injury report.