Safety Antone Exum was set to start for the 49ers against the Los Angeles Chargers on Sunday, in place of injured strong safety Jaquiski Tartt. On Saturday, Exum joined Tartt on the injury report.
San Francisco downgraded Exum to "questionable" with a quadricep injury, the team announced Saturday. Exum led all 49ers defensive backs and played 76 snaps in Week 3 against the Kansas City Chiefs.
DB Antone Exum Jr. has been downgraded to Questionable (quadricep) for tomorrow’s game. #SFvsLAC
— San Francisco 49ers (@49ers) September 29, 2018
Tartt (shoulder) is doubtful for Sunday, and the 49ers have a banged-up secondary.