Philip Rivers (back, chest) returned to Chargers practice Thursday, getting in a "full" session.
A league source tells ESPN's Adam Schefter that Philip Rivers is "battling a back injury that is bigger than people realize."
Philip Rivers (chest) remained sidelined at Wednesday's practice.
Philip Rivers (chest) sat out of Tuesday's practice.
Philip Rivers completed 24-of-41 passes for 232 yards with one touchdown and two interceptions in Sunday's Week 15 loss to the Broncos.
Philip Rivers completed 20-of-33 passes for 189 yards, one touchdown, and an interception in Sunday night's Week 14 loss to the Patriots.
Philip Rivers (chest) was added to the Chargers' injury report on Thursday, but is practicing in full.
Philip Rivers completed 34-of-45 passes for 383 yards with three touchdowns and one interception in Sunday's Week 13 win at Baltimore.
Philip Rivers completed 29-of-35 passes for 291 yards, one touchdown, and one interception in the Chargers' Week 12 win over the Rams.
Philip Rivers (chest, ribs) is practicing in full this week.
Speaking Monday, Chargers coach Mike McCoy denied that Philip Rivers was playing through a rib injury.
Chargers sources tell NFL Network's Albert Breer that Philip Rivers was "fine physically" following Sunday's win over the Raiders.
Following Sunday's win over the Raiders, Antonio Gates said Philip Rivers has been dealing with a "very severe rib injury" for the past few weeks.
Philip Rivers completed 22-of-34 passes for 193 yards and a touchdown in the Chargers' Week 11 win over the Raiders.