Recipient Mike Williams didn’t practice on Wednesday, three days before the Chargers v Jaguars game.
Williams injured his back during Sunday’s game.
An MRI showed a bruise, and trainer Brandon Staley called Williams day after day.
Thursday’s Chargers practice and game reports will give a better idea of whether Williams has a chance to play.
He missed four regular season games but still led the Chargers with 895 receiving yards.
The Chargers have made only one change to their practice record since Tuesday, adding Raheem Lane from safety with a thumb injury. Lane had a full practice.
Edge Rusher Joey Boza (groin), cornerback Bryce Callahan (groin), protector Zander Horvath (ankle), linebacker Kenneth Murray junior (neck), linebacker Amen Ogbongbemiga (biceps) and attacking hold Trey Pipkins III (knee) remained full participants.