No Ordinary Sport

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Across
  1. 4. Something difficult to accomplish
  2. 5. to do something to entertain people
  3. 7. someone who participates in a sport
  4. 9. to grab something firmly
  5. 12. to do something again and again in order to become better at it
  6. 14. to achieve a goal after hard work
  7. 15. the skill, knowledge, or experience acquired
Down
  1. 1. physical condition, especially of one's muscles and heart
  2. 2. an important accomplishment that results from hard work or careful planning
  3. 3. to injure a part of the body by using it too much
  4. 6. having a firm goal
  5. 8. the furthest or highest degree of something
  6. 10. the ability or strength to keep doing something for a long time
  7. 11. ability to move quickly and easily
  8. 13. to do something that might cause harm or a bad result