It was Dutch legend Johan Cruyff who said, 'Football is a game of mistakes. Whoever makes the fewest mistakes wins matches.' Some players and clubs just seem to muck things up more than others. No matter who you support, from a non-league to a world class team, there is always the potential for a muck-up to occur. The substitute who was sent off before he came on. The goalkeeper who had his career finished by a collision with a dog on the pitch...