Eric Winston visited the Chargers nearly three weeks ago. Since then, there have been changes on the offensive line. Two guards were signed. One 6-foot-9 tackle was added. Another 6-foot-9 tackle was released. As for the team's interest in Winston, that hasn't changed — not one bit. The door remains open on the possibility the ex-Chiefs right tackle could come to San Diego, a team source said Wednesday. While the Chargers' interest is for certain, that a deal will materialize is not, as nothing appears imminent at this time. Winston, 29, has taken his time in free agency.