MILWAUKEE (AP) -- The Green Bay Packers probably won't need long to shake off an ugly start to the preseason. A long-term injury to linebacker Desmond Bishop would be a more significant setback. Bishop hurt his right leg in the first quarter of the Packers' 21-13 loss at San Diego in Thursday night's preseason opener. Speaking to reporters after the game, Packers coach Mike McCarthy characterized Bishop's injury as a knee sprain, with potential damage to his hamstring. McCarthy said Bishop's injury "didn't look very good." Bishop was hurt when a group of players fell on his right leg. He was unable to put any weight on it as he was helped to the sideline.