Los Angeles Chargers OT Joe Barksdale (knee), DE Joey Bosa (foot) and LB Kyzir White (knee) did not participate in practice all week and have been ruled out for Week 4 versus the San Francisco 49ers. WR Travis Benjamin (foot) has been limited in practice all week and is listed as questionable. WR Keenan Allen (knee, tooth) returned to limited practice Friday, Sept. 28, after missing the previous two sessions and is also listed as possible. OT Russell Okung (knee) and FB Derek Watt (thumb) fully participated in practice Friday and have been removed from the injury report.