In the second of our Sunderland v Middlesbrough “Who are You?”s – it happens that way sometimes – we talk to Harry Pearson, Guardian sports columnist and author of books that include the wonderful North-eastern footballing odyssey, The Far Corner. That’s the one to grab if you read nothing else about the game. Harry is also a slightly guilty Boro fan, too guilty about the long gaps between his attendances to muscle in on the limited ticket supply …