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Anonymous users2024-02-10On December 4, 2009, Adidas and FIFA jointly released the official match ball "Jabulani" for the 2010 World Cup in South Africa in Cape Town.
"Jabulani" is derived from the African Zulu language, which means "universal celebration". The new match ball is a historic breakthrough in technology and has been designed with South African elements in mind.
Circumferential test of the sphere: FIFA approved qualifying standard: jabulani": - cm).
Durable Round Sphere Test: FIFA Approved Qualification Criteria: The maximum difference does not exceed. "jabulani": the maximum difference does not exceed .
Water Absorption Test: FIFA Approved Qualification Criteria: No more than 10% increase in the weight of the ball. "jabulani": sphere weight increased by 0 .
Weight test: FIFA approved qualifying standard: The weight of the football is between 420 445 grams. "Jabulani": weight 440 g (+ - 2 g).
Sphere shape and size retention test: FIFA approved passing criteria: 2,000 hits at 50 km/h "jabulani": 3,500 hits at 50 km/h.
**Performance test: FIFA approved passing standard: not more than 10 cm.
Ball pressure test: FIFA approved passing standard: ball pressure drop of no more than 20%. "Jabulani": The ball pressure drops by no more than 10%.
Match ball for the 9th World Cup (Mexico 1970) - Telstar
10th World Cup (West Germany 1974) match ball - Telstar & Chile
The match ball of the 11th World Cup (Argentina 1978) - Tango Riverplate
Match ball for the XII World Cup (World Cup Spain 1982) - Tango Espana
Thirteenth World Cup (Mexico 1986) match ball - azteca
14th World Cup (Italy 1990) match ball - etrusco unico
The match ball for the 15th World Cup (1994 World Cup in the United States) - Questra
The 16th World Cup (1998 World Cup in France) match ball - tricolore
The 17th World Cup (2002 Japan-Korea World Cup) match ball - fevernova (Flying Fire Meteor).
The match ball for the 18th World Cup (2006 World Cup in Germany) - adidas + teamgeist (+ team star).
The 19th World Cup (2010 South Africa World Cup) match ball - adidas + jabulani (universal celebration).
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Anonymous users2024-02-09The referee decides on the ball before the start of the match.
According to the FIFA Rules of Competition, the match ball must comply with the regulations of the federation and must be inspected before the game to ensure that the ball's size, weight, air pressure, material and other standards meet the requirements. Usually, before the start of the game, the referee will check the match ball and decide whether it meets the rules of the old fight, and carry out activities such as ball balance registration and player inspection, and the game officially begins.
In soccer, the match ball is provided by the organizer or refereeing organization, and the referee decides which ball to use.
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