Kite flying is a professional sport in Thailand.
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In 1910 football teams were penalized 15 yards for an incompleted forward pass.
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Prior to 1900, prize fights lasted up to 100 rounds.
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During WWII, because a lot of players were called to duty, the Pittsburgh Steelers and Philadelphia Eagles combined to become The Steagles.
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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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