Lions cornerback Jerry Jacobs left in the fourth quarter after feeling “light-headed.” Detroit Lions cornerback Jerry Jacobs has given the team’s secondary a necessary shot in the arm with his physicality and tenacity. However, on Thursday against the Buffalo Bills, Jacobs left the game late after coming up a little groggy in the fourth quarter. “I know he felt a little light-headed, so we’re not sure,” coach Dan Campbell said after the game. “There’s a chance he’s goes into concussion protocol, but yet, we never really saw him bang his head. He feels a little off, so we’ll see.” MLive…