Matt is 50!

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Across
  1. 4. Was a long run
  2. 5. #1 supporter(back in the day)
  3. 8. Matt's unauthorised playdate
  4. 9. Matt's greatest love
  5. 11. Where it all began
  6. 12. A self-taught _______ whiz
  7. 14. If he's in trouble, use this
  8. 15. Matt's favourite number
  9. 17. What matt thinks he is
  10. 18. A galaxy far, far away
  11. 19. What matt is
Down
  1. 1. 1 on 1 or 3 on 3?
  2. 2. 4017
  3. 3. On your marks
  4. 6. Forecasts the weather like a pro
  5. 7. Matt's orbits round the sun
  6. 10. Hip, hip hooray
  7. 13. A cuisine Matt loves
  8. 16. Career change
  9. 20. The best subject