And then there's the theory that certain referees have it in for you. Personally I've never been in the habit of checking the fixture list for referees - it's usually the kitmen who do that, telling us about some infamous game the same referee officiated 10 years ago or insisting that we've never won a game under him.
Saying that, though, Matt Messias is one official I won't forget in a hurry. He only refereed a few games for us while I was at West Ham, but every game he officiated we lost. I began to think: 'Oh here we go.' I knew him from school in Welwyn Garden City and we were a bit competitive. We both used to do high jump and he held the school record. Well, one afternoon I broke it. Except my attempt wasn't official, as it was after school hours. He wouldn't let me forget that: 'I've still got the record,' he used to go on.