The Ephs and Bantams have been playing tennis since 1948.
Williams leads the series 56-6 through 2009-10.
| Year | Winner | Location (W/T) |
Score | Tournament |
| 2010 | Williams | T | 6-3 | |
| 2009 | Williams | W | 6-1 | |
| 2008 | Trinity | T | 6-3 | |
| 2007 | Williams | W | 6-3 | |
| 2006 | Williams | W | 4-0 | NCAA |
| 2006 | Williams | N | 7-0 | NESCAC |
| 2006 | Williams | W | 5-1 | |
| 2005 | Williams | T | 4-3 | |
| 2004 | Williams | W | 6-1 | |
| 2003 | Williams | T | 5-2 | |
| 2002 | Williams | T | 7-0 | |
| 2001 | Williams | W | 6-1 | |
| 2000 | Williams | T | 6-1 | |
| 1999 | Williams | N | 6-1 | NCAA |
| 1999 | Williams | W | 7-0 | |
| 1998 | Williams | T | 7-0 | |
| 1997 | Williams | W | 7-0 | |
| 1996 | Williams | T | 7-0 | |
| 1995 | Williams | W | 7-0 | |
| 1994 | Williams | T | 7-0 | |
| 1993 | Williams | T | 7-2 | |
| 1992 | Williams | W | 9-0 | |
| 1991 | Williams | T | 8-1 | |
| 1990 | Wiliams | W | 8-1 | |
| 1989 | Trinity | T | 8-1 | |
| 1988 | Trinity | T | 7-2 | |
| 1987 | Williams | T | 8-1 | |
| 1986 | Williams | T | 8-1 | |
| 1985 | Williams | T | 8-1 | |
| 1984 | Trinity | W | 6-3 | |
| 1983 | Williams | T | 6-3 | |
| 1982 | Williams | W | 5-4 | |
| 1981 | Williams | T | 6-3 | |
| 1980 | Williams | W | 8-1 | |
| 1979 | Williams | T | 5-4 | |
| 1978 | Williams | W | 7-2 | |
| 1977 | Trinity | T | 6-3 | |
| 1976 | Williams | W | 6-3 | |
| 1975 | Williams | T | 9-0 | |
| 1974 | Williams | W | 9-0 | |
| 1973 | Williams | T | 8-1 | |
| 1972 | Trinity | W | 7-2 | |
| 1971 | Williams | T | 8-1 | |
| 1970 | Williams | W | 5-4 | |
| 1947 |
Williams |
T |
9-0 |
|
| 1941 |
Williams |
W |
9-0 |
|
| 1939 |
Williams |
W |
8-1 |
|
| 1938 |
Williams |
T |
6-3 |
|
| 1937 | Williams | W | 9-0 | |
| 1936 | Williams | T | 8-1 | |
| 1935 | Williams | W | 7.5-1.5 | |
| 1934 | Williams | T | 7-2 | |
| 1933 | Williams | T | 9-0 | |
| 1932 | Williams | W | 8-1 | |
| 1930 | Williams | T | 9-0 | |
| 1929 | Williams | W | 6-0 | |
| 1921 | Williams | W | 6-0 | |
| 1915 | Williams | W | 6-0 | |
| 1914 | Williams | W | 5-1 | |
| 1913 | Williams | W | 4-2 | |
| 1911 | Williams | W | 6-0 | |
| 1910 | Williams | W | 6-0 |
