The Lions are releasing Sudfeld, Ian Rapoport of NFL Network reports.
Sudfeld completed 14 of 27 passes for 196 yards and a touchdown while also throwing an interception in Saturday's 24-23 win over Kansas City.
Sudfeld (knee) participated in Wednesday's training camp session, Paul Sancya of The Herald Journal reports.
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 (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.