The practice of identifying baseball players by number was started by the Yankees in 1929.
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In England, there's a phenomenon called the "half-time kettle effect" where power use surges at half-time during England's matches in the World Cup as everyone turns on their tea kettles at the same time.
3
The household wrench was invented by boxing heavyweight champion Jack Johnson in 1922.
51
The king of hearts is the only king without a moustache on a standard playing card!
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Boxer Wladimir Klitshko auctioned his Olympic gold medal to raise money for underprivileged Ukrainian children. He raised $1,000,000. The buyer immediately returned the medal to Wladimir as he wanted it to remain in the Klitschko family.
4
It takes 3,000 cows to supply the NFL with enough leather for a year's supply of footballs.
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