The Chargers designated Leonard (leg) for return from injured reserve Tuesday, Kris Rhim of ESPN.com reports.
The move opens Leonard's 21-day practice window. He's yet to appear in a game this season after being injured during the preseason. Tarheeb Still (knee), Cam Hart, Benjamin St-Juste and Donte Jackson have been handling the bulk of the cornerback duties for Los Angeles through eight weeks.