Winning can be determined by physical events such as scoring goals or crossing a line first. Sport is usually governed by a set of rules or customs, which serve to ensure fair competition, and allow consistent adjudication of the winner. The International Olympic Committee (through ARISF) recognises both chess and bridge as bona fide sports, and SportAccord, the international sports federation association, recognises five non-physical sports: bridge, chess, draughts (checkers), Go and xiangqi, and limits the number of mind games which can be admitted as sports. However, a number of competitive, but non-physical, activities claim recognition as mind sports. Other organisations, such as the Council of Europe, preclude activities without a physical element from classification as sports. Sport is generally recognised as system of activities based in physical athleticism or physical dexterity, with major competitions such as the Olympic Games admitting only sports meeting this definition.

Many sports leagues make an annual champion by arranging games in a regular sports season, followed in some cases by playoffs. A number of contests may be arranged in a tournament producing a champion. Some sports allow a 'tie' or 'draw', in which there is no single winner others provide tie-breaking methods to ensure one winner and one loser. In certain sports such as racing, many contestants may compete, simultaneously or consecutively, with one winner in others, the contest (a match) is between two sides, each attempting to exceed the other. Hundreds of sports exist, from those between single contestants, through to those with hundreds of simultaneous participants, either in teams or competing as individuals. Sports can, through casual or organized participation, improve participants' physical health. Sport pertains to any form of physical activity or game, often competitive and/or organized, that aims to use, maintain, or improve physical ability and skills while providing enjoyment to participants and, in some cases, entertainment to spectators.

The 2005 London Marathon: running races, in their various specialties, represent the oldest and most traditional form of sport.

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