old_contents: BASEBALL = 'baseball'
  BASKETBALL = 'basketball'
  CFB = 'cfb'
  CRICKET = 'cricket'
  FOOTBALL = 'football'
  HANDBALL = 'handball'
  HOCKEY = 'hockey'
  SOCCER = 'soccer'
  TENNIS = 'tennis'
  VOLLEYBALL = 'volleyball'
  
new_contents: BASEBALL = 'baseball'
  BASKETBALL = 'basketball'
  CRICKET = 'cricket'
  FOOTBALL = 'football'
  HANDBALL = 'handball'
  HOCKEY = 'hockey'
  RUGBY_L = 'rugby-league'
  RUGBY_U = 'rugby-union'
  SOCCER = 'soccer'
  TENNIS = 'tennis'
  VOLLEYBALL = 'volleyball'
  
  SPORTS = [
      BASEBALL, BASKETBALL, CRICKET, FOOTBALL, HANDBALL, HOCKEY, RUGBY_L,
      RUGBY_U, SOCCER, TENNIS, VOLLEYBALL
  ]
  
subject: Add missing rugby constants