The Chargers are hoping Biadasz (knee) will be able to return late in the season, Adam Schefter of ESPN reports.

Johnston (lower body) is not in uniform for Thursday night's preseason game against the 49ers, Kris Rhim of ESPN.com reports.

questionable

Grimm (undisclosed) reverted to the Chargers' injured-reserve list Thursday, per the NFL's transaction log.

The Chargers placed World (knee) on the active/non-football injury list Friday, per the NFL's transaction log.

Bell (lower body) was present for Thursday's practice but was limited to side work, Sal Capaccio of WGR Sports Radio 550 Buffalo reports.