| Cardiff vs | Blackheath | ||||
| Matches | 99 | ||||
| Won | 74 | ||||
| Lost | 22 | ||||
| Drawn | 3 | ||||
| Points For | 1364 | ||||
| Points Against | 568 | ||||
| Date | Home | Away | Venue | ||
| 09/03/1889 | Blackheath | 8 | 0 | Cardiff | Rectory Field, Blackheath |
| 20/11/1890 | Cardiff | 2 | 4 | Blackheath | Cardiff Arms Park, Cardiff |
| 28/03/1891 | Cardiff | 4 | 9 | Blackheath | Cardiff Arms Park, Cardiff |
| 12/12/1891 | Blackheath | 13 | 0 | Cardiff | Rectory Field, Blackheath |
| 10/12/1892 | Blackheath | 9 | 10 | Cardiff | Rectory Field, Blackheath |
| 21/01/1893 | Cardiff | 19 | 13 | Blackheath | Cardiff Arms Park, Cardiff |
| 09/12/1893 | Blackheath | 14 | 10 | Cardiff | Rectory Field, Blackheath |
| 26/03/1894 | Cardiff | 10 | 3 | Blackheath | Cardiff Arms Park, Cardiff |
| 08/12/1894 | Blackheath | 11 | 10 | Cardiff | Rectory Field, Blackheath |
| 19/01/1895 | Cardiff | 7 | 5 | Blackheath | Cardiff Arms Park, Cardiff |
| 30/11/1895 | Blackheath | 8 | 0 | Cardiff | Rectory Field, Blackheath |
| 29/02/1896 | Cardiff | 18 | 0 | Blackheath | Cardiff Arms Park, Cardiff |
| 19/12/1896 | Blackheath | 0 | 5 | Cardiff | Rectory Field, Blackheath |
| 28/12/1896 | Cardiff | 16 | 8 | Blackheath | Cardiff Arms Park, Cardiff |
| 01/01/1898 | Cardiff | 13 | 13 | Blackheath | Cardiff Arms Park, Cardiff |
| 10/12/1898 | Blackheath | 11 | 14 | Cardiff | Rectory Field, Blackheath |
| 03/04/1899 | Cardiff | 16 | 0 | Blackheath | Cardiff Arms Park, Cardiff |
| 09/12/1899 | Blackheath | 0 | 18 | Cardiff | Rectory Field, Blackheath |
| 13/01/1900 | Cardiff | 17 | 0 | Blackheath | Cardiff Arms Park, Cardiff |
| 08/12/1900 | Blackheath | 5 | 20 | Cardiff | Rectory Field, Blackheath |
| 16/02/1901 | Cardiff | 33 | 0 | Blackheath | Cardiff Arms Park, Cardiff |
| 14/12/1901 | Blackheath | 3 | 5 | Cardiff | Rectory Field, Blackheath |
| 18/01/1902 | Cardiff | 9 | 3 | Blackheath | Cardiff Arms Park, Cardiff |
| 13/12/1902 | Blackheath | 4 | 8 | Cardiff | Rectory Field, Blackheath |
| 31/01/1903 | Cardiff | 15 | 0 | Blackheath | Cardiff Arms Park, Cardiff |
| 12/12/1903 | Blackheath | 0 | 20 | Cardiff | Rectory Field, Blackheath |
| 30/01/1904 | Cardiff | 14 | 0 | Blackheath | Cardiff Arms Park, Cardiff |
| 10/12/1904 | Blackheath | 8 | 14 | Cardiff | Rectory Field, Blackheath |
| 28/01/1905 | Cardiff | 10 | 3 | Blackheath | Cardiff Arms Park, Cardiff |
| 09/12/1905 | Blackheath | 4 | 24 | Cardiff | Rectory Field, Blackheath |
| 27/01/1906 | Cardiff | 16 | 0 | Blackheath | Cardiff Arms Park, Cardiff |
| 08/12/1906 | Blackheath | 0 | 11 | Cardiff | Rectory Field, Blackheath |
| 07/12/1907 | Blackheath | 10 | 24 | Cardiff | Rectory Field, Blackheath |
| 25/01/1908 | Cardiff | 19 | 3 | Blackheath | Cardiff Arms Park, Cardiff |
| 05/12/1908 | Blackheath | 3 | 18 | Cardiff | Rectory Field, Blackheath |
| 23/01/1909 | Cardiff | 22 | 3 | Blackheath | Cardiff Arms Park, Cardiff |
| 11/12/1909 | Blackheath | 0 | 33 | Cardiff | Rectory Field, Blackheath |
| 22/01/1910 | Cardiff | 36 | 0 | Blackheath | Cardiff Arms Park, Cardiff |
| 10/12/1910 | Blackheath | 3 | 9 | Cardiff | Rectory Field, Blackheath |
| 31/12/1910 | Cardiff | 29 | 0 | Blackheath | Cardiff Arms Park, Cardiff |
| 04/11/1911 | Blackheath | 3 | 3 | Cardiff | Rectory Field, Blackheath |
| 30/12/1911 | Cardiff | 19 | 0 | Blackheath | Cardiff Arms Park, Cardiff |
| 02/11/1912 | Blackheath | 3 | 15 | Cardiff | Rectory Field, Blackheath |
| 25/01/1913 | Cardiff | 28 | 0 | Blackheath | Cardiff Arms Park, Cardiff |
| 01/11/1913 | Blackheath | 9 | 0 | Cardiff | Rectory Field, Blackheath |
| 24/01/1914 | Cardiff | 3 | 6 | Blackheath | Cardiff Arms Park, Cardiff |
| 08/11/1919 | Blackheath | 13 | 0 | Cardiff | Rectory Field, Blackheath |
| 24/01/1920 | Cardiff | 6 | 13 | Blackheath | Cardiff Arms Park, Cardiff |
| 06/11/1920 | Blackheath | 0 | 15 | Cardiff | Rectory Field, Blackheath |
| 22/01/1921 | Cardiff | 12 | 8 | Blackheath | Cardiff Arms Park, Cardiff |
| 29/10/1921 | Cardiff | 6 | 0 | Blackheath | Cardiff Arms Park, Cardiff |
| 31/12/1921 | Blackheath | 20 | 5 | Cardiff | Rectory Field, Blackheath |
| 28/10/1922 | Cardiff | 13 | 8 | Blackheath | Cardiff Arms Park, Cardiff |
| 30/12/1922 | Blackheath | 8 | 11 | Cardiff | Rectory Field, Blackheath |
| 27/10/1923 | Blackheath | 8 | 13 | Cardiff | Rectory Field, Blackheath |
| 29/12/1923 | Cardiff | 25 | 0 | Blackheath | Cardiff Arms Park, Cardiff |
| 25/10/1924 | Blackheath | 26 | 3 | Cardiff | Rectory Field, Blackheath |
| 27/12/1924 | Cardiff | 23 | 3 | Blackheath | Cardiff Arms Park, Cardiff |
| 24/10/1925 | Blackheath | 8 | 17 | Cardiff | Rectory Field, Blackheath |
| 10/04/1926 | Cardiff | 23 | 20 | Blackheath | Cardiff Arms Park, Cardiff |
| 23/10/1926 | Blackheath | 5 | 3 | Cardiff | Rectory Field, Blackheath |
| 02/04/1927 | Cardiff | 10 | 5 | Blackheath | Cardiff Arms Park, Cardiff |
| 22/10/1927 | Blackheath | 16 | 7 | Cardiff | Rectory Field, Blackheath |
| 24/03/1928 | Cardiff | 11 | 6 | Blackheath | Cardiff Arms Park, Cardiff |
| 20/10/1928 | Blackheath | 14 | 10 | Cardiff | Rectory Field, Blackheath |
| 23/03/1929 | Cardiff | 42 | 3 | Blackheath | Cardiff Arms Park, Cardiff |
| 26/10/1929 | Blackheath | 8 | 3 | Cardiff | Rectory Field, Blackheath |
| 22/03/1930 | Cardiff | 21 | 13 | Blackheath | Cardiff Arms Park, Cardiff |
| 25/10/1930 | Blackheath | 5 | 6 | Cardiff | Rectory Field, Blackheath |
| 29/11/1930 | Cardiff | 25 | 0 | Blackheath | Cardiff Arms Park, Cardiff |
| 24/10/1931 | Blackheath | 3 | 8 | Cardiff | Rectory Field, Blackheath |
| 09/04/1932 | Cardiff | 21 | 11 | Blackheath | Cardiff Arms Park, Cardiff |
| 22/10/1932 | Blackheath | 6 | 3 | Cardiff | Rectory Field, Blackheath |
| 05/11/1932 | Cardiff | 18 | 8 | Blackheath | Cardiff Arms Park, Cardiff |
| 28/10/1933 | Blackheath | 9 | 3 | Cardiff | Rectory Field, Blackheath |
| 24/03/1934 | Cardiff | 3 | 0 | Blackheath | Cardiff Arms Park, Cardiff |
| 27/10/1934 | Blackheath | 8 | 6 | Cardiff | Rectory Field, Blackheath |
| 23/03/1935 | Cardiff | 17 | 0 | Blackheath | Cardiff Arms Park, Cardiff |
| 29/02/1936 | Cardiff | 17 | 3 | Blackheath | Cardiff Arms Park, Cardiff |
| 24/10/1936 | Blackheath | 0 | 23 | Cardiff | Rectory Field, Blackheath |
| 27/02/1937 | Blackheath | 5 | 4 | Cardiff | Rectory Field, Blackheath |
| 23/10/1937 | Blackheath | 6 | 0 | Cardiff | Rectory Field, Blackheath |
| 06/11/1937 | Cardiff | 8 | 0 | Blackheath | Cardiff Arms Park, Cardiff |
| 22/10/1938 | Cardiff | 22 | 3 | Blackheath | Cardiff Arms Park, Cardiff |
| 05/11/1938 | Blackheath | 8 | 11 | Cardiff | Rectory Field, Blackheath |
| 13/12/1947 | Cardiff | 13 | 5 | Blackheath | Cardiff Arms Park, Cardiff |
| 04/12/1948 | Blackheath | 3 | 8 | Cardiff | Rectory Field, Blackheath |
| 19/11/1949 | Cardiff | 19 | 0 | Blackheath | Cardiff Arms Park, Cardiff |
| 14/04/1951 | Blackheath | 12 | 17 | Cardiff | Rectory Field, Blackheath |
| 08/03/1952 | Cardiff | 14 | 6 | Blackheath | Cardiff Arms Park, Cardiff |
| 13/03/1954 | Cardiff | 3 | 0 | Blackheath | Cardiff Arms Park, Cardiff |
| 12/03/1955 | Blackheath | 6 | 6 | Cardiff | Rectory Field, Blackheath |
| 26/11/1955 | Blackheath | 3 | 10 | Cardiff | Rectory Field, Blackheath |
| 24/11/1956 | Cardiff | 16 | 6 | Blackheath | Cardiff Arms Park, Cardiff |
| 11/09/1971 | Cardiff | 26 | 13 | Blackheath | Cardiff Arms Park, Cardiff |
| 09/09/1972 | Blackheath | 6 | 20 | Cardiff | Rectory Field, Blackheath |
| 08/09/1973 | Cardiff | 23 | 9 | Blackheath | Cardiff Arms Park, Cardiff |
| 14/09/1974 | Blackheath | 17 | 25 | Cardiff | Rectory Field, Blackheath |
| 13/09/1975 | Cardiff | 44 | 0 | Blackheath | Cardiff Arms Park, Cardiff |
