Chargers' Justin Jackson: Will miss at least three weeks

The Chargers placed Jackson (knee) on injured reserve Saturday.

Jackson's knee injury has lingered since he was injured early in last Sunday's game, and the Chargers opted to shut him down with the hope that he'll return fully healthy after three weeks. In a corresponding move, they signed Kalen Ballage to the active roster to join Joshua Kelley and Troymaine Pope (neck) in the backfield. Jackson is eligible to return Dec. 6 against the Patriots, but by that time, Austin Ekeler (hamstring) could be back, which would diminish any role for Jackson.