FILE - This 2012 file photo shows David Nelson of the Buffalo Bills NFL football team. Nelson is expected to miss the rest of the season with a torn ligament in his right knee. Two people familiar with the of injuries of both Nelson and Fred Jackson provided updates to The Associated Press on Monday, Sept. 10, 2012, a day after both players were hurt in a season-opening 48-28 loss at the New York Jets. Both people spoke on the condition of anonymity because the team has not provided any updates. (AP Photo/File)