The Simplest Rule in Sport
Association football — known almost everywhere as football, and as soccer in a few places — is played between two teams of 11 players who mostly use their feet to kick an inflated ball around a pitch.
The objective could not be plainer: score more goals than the other team by getting the ball into the rectangular-framed goal they defend. Traditionally the game runs over two 45-minute halves, for 90 minutes total.
That simplicity is the reason for everything else. With an estimated 250 million players active in over 200 countries and territories, it is the world's most popular sport by a wide margin. The equipment requirement is one ball. There is no minimum height, no specialist gear, no surface that rules you out. A sport that needs nothing spreads everywhere, and football spread further than any of them.
Rules From 1863, Still Running
Football is played according to the Laws of the Game, a set of rules in effect since 1863 and maintained by the International Football Association Board (IFAB) since 1886.
That continuity is remarkable. The written laws governing matches today descend directly from a document older than the telephone, older than the car, older than powered flight.
The central restriction is the one everything else is built around. When the ball is in play, outfield players may use any part of the body except the hands and arms — the head, chest and thighs are all common. Only goalkeepers may use hands, and only inside their own penalty area. The ball itself is specified precisely: 68–70 cm in circumference. Depending on the competition, a draw may be declared with one point each, or the match may go to extra time or a penalty shoot-out.
Six Confederations and One Governing Body
Internationally the game is governed by FIFA, beneath which sit six continental confederations: AFC (Asia), CAF (Africa), CONCACAF (North and Central America and the Caribbean), CONMEBOL (South America), OFC (Oceania) and UEFA (Europe).
Underneath those sit the national associations — the FA in England, U.S. Soccer in the United States and so on — which manage the game in their own countries at professional and amateur level, and run competitions in accordance with the Laws of the Game.
It is an unusually clean pyramid for something this large: one rulebook at the top, six regional bodies, then every country, then every club and school pitch. The same laws that decide a World Cup final apply, unchanged, to children playing in a park.
Bigger Than the Olympics
The most prestigious senior international competition is the FIFA World Cup — and the men's World Cup is the most-viewed sporting event in the world, surpassing the Olympic Games.
That comparison deserves a pause. The Olympics assemble hundreds of events across dozens of sports from nearly every nation. The World Cup is one sport, one bracket, one trophy — and more people watch it.
At club level, the peak is the UEFA Champions League, which draws an extensive television audience worldwide. Its men's final is the most-watched annual sporting event in the world — meaning that in any given year where no World Cup is played, the single largest shared television moment on the planet is still a football match.
