Max's Crossword - In a league of its own!

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Across
  1. 4. extreme tiredness resulting from mental or physical exertion or illness
  2. 6. a dishonest or unprincipled man
  3. 7. being the only one of its kind; unlike anything else
  4. 8. skill or ability in a particular field
Down
  1. 1. a group of sports clubs which play each other over a period for a championship
  2. 2. an unusually large number of insects or animals infesting a place and causing damage
  3. 3. having a high value because of age and quality
  4. 5. a Muslim place of worship