Vannett (concussion) has been ruled out ahead of Sunday's game against the Ravens.
The veteran tight end was held out of practice all week with a concussion, so it's not a surprise that he'll be inactive for Week 12's contest. Vannett has appeared in three games with the Chargers since signing with the team's active roster in early November, playing 59 total snaps (34 offensive and 25 on special teams).