According to NFL Network, Detroit Lions quarterback Matthew Stafford’s status is “in doubt” for week 15 against the Titans.

Stafford has yet to be officially ruled out, but his rib injury may be significant enough for the Lions to possibly shut him down for the remainder of the season.

Backup Chase Daniel came off the bench for Stafford in the fourth quarter of week 14 against the Packers.

In fantasy terms, this could be a big damper for not just Stafford owners, but for those who have Marvin Jones or T.J. Hockenson in their lineups with a downgrade to the QB position.