San Diego Chargers' Defensive Coordinator Ron Rivera has declined overtures from several NFL teams to interview for their open head coaching position. Rivera is not interested in talking to other teams until the Chargers have finished their season. ?My sole focus and concentration right now is helping the Chargers win a championship. Nothing else matters right now,? said Rivera. ?I don?t want to let anything distract from our objective.? Rivera will not discuss the issue further until the Chargers? season ends, including which teams had expressed interest.