While technical recovery might be okay by 9-12 months I don’t think the player truly feels confident and comfortable on the rebuilt knee until their second season. We saw the dip in Welker’s numbers in 2010, Brady was a little shaky during parts of 2009. Even Revis last year wasn’t fully comfortable yet. Adrian Peterson is probably the only exception that I can think of, where the player came back from ACL surgery within months and was just as good as he was before. I do think Gronk is just the kind of guy who could be back to normal sooner than later.