Team tactics are integral for playing association football. In theory, association football is a very simple game, as illustrated by Kevin Keegan's namely assertion that his tactics for winning a match were to "score more goals than the opposition". Tactical prowess within the sport is nonetheless a craftsmanship of its own, and one of the reasons why managers are paid well on the elite level. Well-organised and ready teams are often seen beating teams with more skillful players on paper. Manuals and books generally cover not only individual skills but tactics as well.
Association football teams consist of ten outfield players and one goalkeeper, which makes passing an integral part of game strategy, and is taught to players from a young age. In terms of complexity, lower levels of the game such as youth leagues, amateur leagues and semi-professional leagues primarily focus on the fundamentals of the game, whereas higher levels of the game – as it regards to professional football teams – will increase complexity and level of detail in strategy of the game.