Vs. Middlebury
Middlebury and Williams first met in 1920 in Williamstown in a match won by the Ephs 6-0
Williams leads the series 34-11 through 2008-09.
| Year | Winner | Location (W/M) | Score | Tournament |
| 2009 | Middlebury | M | 8-1 | |
| 2008 | Williams | W | 5-4 | |
| 2007 | Middlebury | N | 7-2 | NESCAC |
| 2007 | Middlebury | M | 8-1 | |
| 2006 | Middlebury | N | 4-3 | NESCAC |
| 2006 | Middlebury | W | 5-2 | |
| 2005 | Middlebury | M | 5-2 | |
| 2004 | Middlebury | N | 4-3 | NCAA |
| 2004 | Middlebury | W | 6-1 | |
| 2003 | Middlebury | M | 6-1 | |
| 2002 | Williams | W | 6-1 | |
| 2001 | Williams | M | 6-1 | |
| 2000 | Williams | W | 7-0 | |
| 1999 | Williams | M | 7-0 | |
| 1998 | Williams | W | 6-1 | |
| 1997 | Williams | M | 7-0 | |
| 1996 | Williams | W | 7-0 | |
| 1995 | Williams | M | 7-0 | |
| 1994 | Williams | M | 6-3 | |
| 1992 | Williams | W | 6-3 | |
| 1991 | Middlebury | M | 5-4 | |
| 1990 | Williams | W | 5-4 | |
| 1989 | Williams | M | 5-4 | |
| 1988 | Williams | W | 8-1 | |
| 1987 | Williams | M | 5-4 | |
| 1986 | Williams | M | 7-2 | |
| 1985 | Middlebury | M | 8-1 | |
| 1984 | Williams | W | 8-1 | |
| 1983 | Williams | M | 7-2 | |
| 1982 | Williams | W | 9-0 | |
| 1962 | Williams | W | 9-0 | |
| 1961 | Williams | M | 8-1 | |
| 1960 | Williams | W | 9-0 | |
| 1959 | Williams | M | 8-1 | |
| 1957 | Williams | M | 8-1 | |
| 1956 | Williams | W | 7-2 | |
| 1954 | Williams | W | 6-3 | |
| 1953 | Williams | W | 6-3 | |
| 1946 | Williams | W | 9-0 | |
| 1942 | Williams | W | 6-3 | |
| 1940 | Williams | W | 4-0 | |
| 1937 | Williams | W | 8-1 | |
| 1936 | Williams | W | 8-1 | |
| 1921 | Williams | W | 4-0 | |
| 1920 | Williams | W | 6-0 |
