Because of the lockout, there have been only a few free-agent signings and even fewer impact players switching teams. One of those was S Bob Sanders, who was released by the Colts in late February and signed with the Chargers a couple weeks later. Sanders brings plenty of injury questions with him to San Diego, having played more than 13 games in a season only twice in his seven-year pro career. He has played only nine games the past three seasons. More importantly, however, is that he brings toughness to the secondary. The way we hear it, the Chargers aggressively pursued Sanders when he hit the market despite knowing that he can't be an every-down player. Eric Weddle and Steve Gregory ably filled the starting safety positions in 2010 when San Diego had the NFL's No. 1 defense. Now, if the team can re-sign Weddle, a potential free-agent, to go along with Sanders and Gregory, new defensive coordinator Greg Manusky can try a variety of different blitzes and formations, using Sanders' knack for stuffing run plays to the team's advantage while keeping all three players fresh.