If every U.S. sports team converted to metric, Americans would understand the metric system by the next game.

And you would not even need to pass any legislation to get people to learn it.

Edit:

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  Yes, many Americans already know metric, I am one of them, but I was thinking in terms of adoption by the general public.

  
  


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  In terms of sports, I was just thinking changing the way we broadcast/label the measurement from feet to meters or from miles per hour to kilometers per hour and not necessarily change the field design. The only one that would come out strange is football where 10 yards would be 9.144 meters. When they talk about weather, use Celsius instead of Fahrenheit. Or player stats like height and weight.

  
  


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  The cost to companies would not be as great as some are suggesting as it would streamline their inventory to one standarded rather than having two standards for every product.

  
  


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  Wow, we made it to the front! It has been fun reading all your comments. I think I stirred the bees nest bringing up converting-.-;;;