Sudfeld (knee) re-signed with the Lions on Wednesday.
The Lions placed Sudfeld (knee) on injured reserve Tuesday.
Sudfeld (knee) will miss the 2023 season due to a torn ACL, Adam Schefter of ESPN reports.
Coach Dan Campbell declined to confirm Monday whether Sudfeld (knee) is dealing with a torn ACL and said the quarterback will receive a second opinion, Kyle Meinke of MLive.com reports.
Sudfeld and the Lions agreed to a contract Friday.
Sudfeld (illness) is active Sunday against the Vikings.
Sudfeld (illness) is questionable for Sunday's matchup against the Vikings.
Sudfield was signed by the Lions on Wednesday.
The Lions are expected to sign Sudfeld upon his passing a physical Wednesday, Dave Birkett of the Detroit Free Press reports.
Sudfeld is the Niners' starting quarterback for Saturday's preseason matchup at the Vikings, Cam Inman of The San Jose Mercury News reports.