Tug of War was an Olympic event between 1900 and 1920.
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A 'face-off' in hockey was originally called a 'puck-off'.
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The first baseball caps were made of straw.
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The king of hearts is the only king without a moustache on a standard playing card!
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The household wrench was invented by boxing heavyweight champion Jack Johnson in 1922.
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There is a growing sport in Berlin and London called Chess Boxing. Players alternate between a round of chess and a round of boxing until one is declared winner either by checkmate, KO, or technical stoppage.
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The practice of identifying baseball players by number was started by the Yankees in 1929.
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