Sports in the USA

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Across
  1. 1. Highest scoring individual in the NBA
  2. 4. Conists of three periods of twenty minutes
  3. 5. professional league is NFL
  4. 6. James Nasmith invented
  5. 7. National sport of USA
Down
  1. 2. the greatest swimming athlete of all time
  2. 3. Divided into two halves of 45 minutes
  3. 8. the best baseball player