The Chargers claimed CB Johnny Patrick off waivers from the Saints on Wednesday.
Patrick, a third-round pick by New Orleans in 2011, has appeared in 24 games with one start in two seasons. He has 29 tackles, three passes defensed and six special-teams stops.
Last season, Patrick played in 15 games, notching 21 tackles and three PDs. Patrick adds depth at corner, as both Chargers starters Antoine Cason and Quentin Jammer are set to enter free agency.