Of all the Chargers players, the running back Brown may know Newton best, having caught passes from the fellow Auburn man in Atlanta before the season.
The Chargers now have 11 players on injured reserve.
Vaughn suffered a groin injury in warmups before the Chargers 34-24 win in Pittsburgh last week while Stuckey re-injured a hamstring during the game.
A time may come when the Chargers must decide what his presence means for the offensive role of Micheal Spurlock, who just provided them their most productive game from the slot this season.
Those victories just came a little too late.