Concerned over the status of Vinny Testaverde, the Carolina Panthers promoted quarterback Drew Olson to the 53-man roster to possibly serve as the backup in Sunday's game against Atlanta. If Testaverde, who has a sore right Achilles tendon, can't play against the Falcons, undrafted rookie Matt Moore would start. With David Carr (concussion) ruled out of the game and Jake Delhomme (elbow) out for the season, Olson would be the Panthers' only option after Moore. Olson was signed to the practice squad Tuesday and has never played in an NFL game. The former UCLA quarterback spent last season on Baltimore's practice squad. To make room on the roster Saturday, the Panthers waived fullback Billy Latsko.