Premier League   M. W D L goals
  at home 1 0 0 1 1 : 5
  Away 1 0 0 1 2 : 3
  2 0 0 2 3 : 8
Championship   M. W D L goals
  at home 19 10 2 7 31 : 25
  Away 19 6 8 5 25 : 23
  38 16 10 12 56 : 48
FA Cup   M. W D L goals
  at home 1 0 1 0 1 : 1
  Away 1 0 1 0 2 : 2
  Neutral Place 1 1 0 0 2 : 1
  3 1 2 0 5 : 4
League Cup   M. W D L goals
  at home 1 1 0 0 1 : 0
  Away 1 0 0 1 1 : 3
  2 1 0 1 2 : 3
overall   M. W D L goals
  at home 22 11 3 8 34 : 31
  Away 22 6 9 7 30 : 31
  Neutral Place 1 1 0 0 2 : 1
  45 18 12 15 66 : 63
Premier League
2018/2019 27. Round Cardiff City - Watford FC 1:5 (0:1)
2018/2019 17. Round Watford FC - Cardiff City 3:2 (1:0)
Championship
2023/2024 30. Round Watford FC - Cardiff City 0:1 (0:1)
2023/2024 11. Round Cardiff City - Watford FC 1:1 (1:0)
2022/2023 43. Round Watford FC - Cardiff City 1:3 (1:3)
2022/2023 19. Round Cardiff City - Watford FC 1:2 (1:1)
2020/2021 36. Round Cardiff City - Watford FC 1:2 (1:1)
2020/2021 16. Round Watford FC - Cardiff City 0:1 (0:1)
2014/2015 24. Round Cardiff City - Watford FC 2:4 (1:2)
2014/2015 19. Round Watford FC - Cardiff City 0:1 (0:1)
2012/2013 41. Round Watford FC - Cardiff City 0:0 (0:0)
2012/2013 12. Round Cardiff City - Watford FC 2:1 (0:1)
2011/2012 42. Round Cardiff City - Watford FC 1:1 (1:0)
2011/2012 23. Round Watford FC - Cardiff City 1:1 (0:0)
2010/2011 28. Round Cardiff City - Watford FC 4:2 (3:1)
2010/2011 24. Round Watford FC - Cardiff City 4:1 (1:1)
2009/2010 38. Round Cardiff City - Watford FC 3:1 (1:0)
2009/2010 11. Round Watford FC - Cardiff City 0:4 (0:2)
2008/2009 31. Round Cardiff City - Watford FC 2:1 (1:1)
2008/2009 12. Round Watford FC - Cardiff City 2:2 (2:0)
2007/2008 24. Round Watford FC - Cardiff City 2:2 (0:1)
2007/2008 6. Round Cardiff City - Watford FC 1:2 (0:1)
2005/2006 36. Round Watford FC - Cardiff City 2:1 (0:0)
2005/2006 3. Round Cardiff City - Watford FC 1:3 (0:1)
2004/2005 26. Round Watford FC - Cardiff City 0:0 (0:0)
2004/2005 8. Round Cardiff City - Watford FC 0:3 (0:2)
2003/2004 26. Round Watford FC - Cardiff City 2:1 (0:0)
2003/2004 6. Round Cardiff City - Watford FC 3:0 (1:0)
1981/1982 9. Round Cardiff City - Watford FC 2:0
1981/1982 4. Round Watford FC - Cardiff City 0:0
1980/1981 8. Round Watford FC - Cardiff City 4:2
1980/1981 3. Round Cardiff City - Watford FC 1:0
1979/1980 7. Round Cardiff City - Watford FC 1:0
1979/1980 2. Round Watford FC - Cardiff City 1:1
1971/1972 5. Round Cardiff City - Watford FC 2:0
1971/1972 2. Round Watford FC - Cardiff City 2:2
1970/1971 9. Round Cardiff City - Watford FC 0:1
1970/1971 3. Round Watford FC - Cardiff City 0:1
1969/1970 8. Round Watford FC - Cardiff City 2:1
1969/1970 5. Round Cardiff City - Watford FC 3:1
FA Cup
1922/1923 1. Round Cardiff City - Watford FC 2:1
1922/1923 1. Round Watford FC - Cardiff City 2:2
1922/1923 1. Round Cardiff City - Watford FC 1:1
League Cup
1984/1985 2. Round Cardiff City - Watford FC 1:0
1984/1985 2. Round Watford FC - Cardiff City 3:1

For games that were decided on penalties the score after 120 minutes will be included in the ranking