Lions quarterback Matthew Stafford won't need surgery on his right shoulder after injuring it on Sunday against the Jets. He injured the same shoulder once before. "He hurt the same shoulder," coach Jim Schwartz said Monday, "but from all accounts and from speaking to the doctors, it's not an aggravation of the old injury. It's a new injury. The old injury was healed and he was just as likely to hurt that shoulder as he was the other one." The original injury to his right (throwing) shoulder was a separation and it cost him six weeks and five games. "It's too early to tell," Schwartz said of how long Stafford would be out. "But there was no stacking (of the injuries), meaning it was no worse now because it was injured before. He's very sore. We hope to get the soreness out and get him back throwing, but we don't know when that will be. But we will err on the side of caution."