 First, two 19-yard receptions by Chris Chambers and a 34-yard catch by Vincent Jackson set up Nate Kaeding's 20-yard field goal to put San Diego on the board.Then seven plays after forcing the Titans to punt, Rivers threw a 20-yard scoring strike to Jackson, giving the Chargers their first lead of the game.Tennessee responded with a drive to the San Diego 20-yard line, only to have Bironas miss a 38-yard field goal attempt.