The Rams activated Shelley from their injured reserve list Wednesday.
The Rams designated Shelley (hamstring) for return from injured reserve Wednesday.
Shelley is questionable to return to Sunday's game against the Cardinals after sustaining a hamstring injury, Jourdan Rodrigue of The Athletic reports.
Shelley signed with the Rams on Friday, Stu Jackson of the team's official site reports.
The Raiders agreed to terms with Shelley on Thursday.
Shelley posted 31 tackles (23 solo) and an interception over 11 games during the 2022 regular season.
Shelley is in line to start at cornerback opposite Patrick Peterson in Saturday's matchup with the Giants, Chris Tomasson of the St. Paul Pioneer Press reports.
Shelley played three snaps on defense in Sunday's win over Buffalo, but had a key pass breakup in the end zone on the final series in overtime.
The Bears waived Shelley on Wednesday, Adam Schefter of ESPN reports.
Shelley may not have a slot cornerback role with both Kyler Gordon and Tavon Young potentially ahead of him on the depth chart Park Hurley of BearGogglesOn.com reports.