Rules of the Game: For FIFA matches, the ball should weigh not more than 450 g (16 oz) and not less than 410 g (14 oz) at the start of the match.
Rules of the Game: For international matches the field of play must have dimensions of: Length: minimum 100 m (110 yds), maximum 110 m (120 yds); Width: minimum 64 m (70 yds), maximum 75 m (80 yds).
CONMEBOL, the South American Football Confederation, was founded in 1916 and has 10 member associations.
The Guinness Book of Records recognizes Sandygate Road stadium in Crosspool, Sheffield, England in as the Oldest Ground in the World. It has been home to Hallam FC since 1860.
Substitutions were allowed for the first time in the 1970 World Cup.
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