Vs. Bates
The Ephs and Bobcats first met in 2000 in the NCAA Tournament in Williamstown that was won by the Ephs 6-1.
Williams leads the series 7-0 through 2008-09.
| Year | Winner | Location (W/B) | Score | Tournament |
| 2009 | Williams | W | 5-1 | NESCAC |
| 2009 | Williams | W | 7-2 | |
| 2008 | Williams | B | 6-3 | |
| 2007 | Willliams | W | 8-1 | |
| 2006 | Williams | W | 4-0 | NCAA |
| 2004 | Williams | W | 5-2 | NCAA |
| 2000 | Williams | W | 6-1 | NCAA |
