The Crimson managed two more goals, as Buttles got his second off of a helper from DeVries at 4:54 and Primm got his fifth with two and a half minutes left in the game. His goal would be the final of the day.
After the Irish had a goal disallowed because of a crease violation, the Crimson could not put together a coordinated effort in the final minute.
An errant pass to the point that trickled out of bounds along the field's far side ended the game, and any hope of post-season play for the Crimson.
With a six-game winning streak and a No. 12 ranking last week, the Irish are guaranteed a spot in the post-season. For the Crimson, after a sorry second half, a post-season that seemed so possible at the beginning of the year is far out of reach.
The Crimson will play its final game of the 2000 season at 1 p.m. on Jordan Field this Saturday against Dartmouth.