The Chargers saw one cornerback get away Wednesday. Tom Telesco made sure there wasn't a second. The first-time general manager completed a four-year, $20 million deal with Derek Cox, the agreement arriving into the night and several hours after cornerback Jerraud Powers signed with the Cardinals. The contract carries a $5.2 million signing bonus with $10.25 million in guarantees, the amounts paid in the first two seasons. Powers was scheduled to visit San Diego late Wednesday afternoon, but the former Colt spent his morning in Arizona and chose not to leave. It was Powers' first game-changing play of the year. He and Cox were part of a cluster of cornerbacks the Chargers targeted in free agency, and when Powers was lost, some urgency was added. Telesco and the front office stepped up their efforts with the former Jaguar, and a deal was reached after darkness fell over Murphy Canyon — or about the time a San Diego restaurant waiter was supposed to be asking Powers, "Sir, what will it be?" Numbers were moved. A three-year deal became a four-year deal. They made it work. In a way, the late-night deal was poetic justice.