Vs. Bowdoin
The Ephs and Polar Bears first met in 1926, but there have been several large gaps in the schedule since then.
Williams holds a 30-1 lead in the series thorugh 2008-09.
| Year | Winner | Location (W/B) | Score | Tournament |
| 2009 | Williams | W | 5-1 | NCAA |
| 2009 | Williams | W | 6-3 | |
| 2008 | Williams | B | 8-1 | |
| 2007 | Williams | N | 5-1 | NCAA |
| 2007 | Williams | N | 5-0 | NESCAC |
| 2007 | Bowdoin | W | 5-4 | |
| 2005 | Williams | B | 4-1 | NCAA |
| 2004 | Williams | W | 7-0 | NCAA |
| 2003 | Williams | B | 4-3 | NCAA |
| 2001 | Williams | W | 7-0 | NCAA |
| 2000 | Williams | W | 6-1 | NCAA |
| 1997 | Williams | W | 4-0 | NCAA |
| 1955 | Williams | W | 9-0 | |
| 1953 | Williams | W | 9-0 | |
| 1952 | Williams | W | 7-2 | |
| 1951 | Williams | W | 8-1 | |
| 1950 | Williams | W | 8-1 | |
| 1949 | Williams | W | 7-2 | |
| 1941 | Williams | W | 8-1 | |
| 1940 | Williams | W | 9-0 | |
| 1938 | Williams | W | 7.5-1.5 | |
| 1937 | Williams | W | 9-0 | |
| 1936 | Wiliams | W | 9-0 | |
| 1930 | Williams | W | 8-1 | |
| 1929 | Williams | W | 6-1 | |
| 1926 | Williams | W | 6-0 |
