The Giants suffered a rash of injuries in Sunday's 13-12 preseason victory over the Ravens. Reserve wide receiver Michael Jennings ruptured an Achilles tendon and is lost for the season. Jennings was starting in place of Plaxico Burress, who did not play. In addition, free safety Will Demps dislocated an elbow and is expected to be out three to four weeks. The secondary took another blow when cornerback Sam Madison suffered a pulled hamstring.