March Madness- How much do you know?

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Across
  1. 4. When a lower-ranked team beats a favorite
  2. 7. Teams that play in "play-in" games (two words)
  3. 9. Last teams in the tournament (two words)
  4. 10. on "_____ Sunday", teams are picked to participate in the tournament
  5. 14. teams that are not favorite to win
  6. 16. Organization that host the basketball tournament
  7. 17. Teams are divided into four regions: East, West, South, and ____.
  8. 18. Umpire for baseketball games
  9. 20. "March _____" refers to the mens college basketball tournament
  10. 21. "March Madness" sport
Down
  1. 1. Winner of March Madness is crowned the "____ Champions"
  2. 2. A college participates after being crowned the champion of their conference
  3. 3. A location where the tournament games are played
  4. 5. City that held the most tournaments
  5. 6. An invitation to participate in March Madness
  6. 8. Team that usually dresses in white or lighter colors
  7. 11. Lower ranked team making a deep run in the tournament
  8. 12. Month when the college basketball tournament is played
  9. 13. a ______ beater describe the winning shot as the time expires
  10. 15. A college participates due to its winning record
  11. 19. Initials of the college that won the most championships