This is the most frequently used tactic when teams take a slender lead against a big side and sometimes it can pay off. If Sunderland can take some sort of a lead or be on par with a draw near the end of the game, 'parking the bus' with every player available may just be enough to put a stop to their opponents, kind of like a 10-0-0 formation if you will. Do this correctly and this could really boil City's blood and may even result in them running out of ideas, knowing they can't even penetrate the final third without having a man in red and white right up in his face almost.