Ninja knowledge underlies new 'Brazuca' ball - researcher - Eurosport

Knowledge from the ninja, Japan's secretive feudal spies and assassins, is the secret behind the new official ball for the upcoming World Cup, one Japanese
Knowledge from the ninja, Japan's secretive feudal spies and assassins, is the secret behind the new official ball for the upcoming World Cup, one Japanese

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Ninja knowledge underlies new 'Brazuca' ball: researcher

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Ninja knowledge underlies new 'Brazuca' ball: researcher