In April 1993, a young Matt Jackson was playing at right back for Everton against QPR. He'd had a good season to that point but always sensed that he didn't really know his position, that he was winging it, that he was guessing what a defender should do. One day this lack of guidance would surely catch up with him. And then it did. On an afternoon at Goodison Park when he came up against the England left winger Andy Sinton.