They entered the NCAA Tournament with just four wins in the last two months.
They were the last at-large team selected into the 16-team tourney field.
But Saturday night, the Notre Dame hockey team showed that the NCAA Committee made the right decision as the Irish Icers defeated Michigan State 3-1 in the West Regional Championship.
Notre Dame now heads to the Frozen Four for the first time in school history.
Many thought that first time would come last year, when the Irish were the top-seed entering the NCAA Tournament. But Michigan State upset Notre Dame in this very regional championship game to end the Icers' season.
Revenge was sweet Saturday night as the Irish became the first ever 4-seed to advance to the Frozen Four.
With six minutes left in regulation, the game was tied at 1.
That's when Irish senior captain Mark Van Guilder scored to give Notre Dame the 2-1 lead. Minutes later, freshman Teddy Ruth added an insurance goal.
The game was scoreless after one period.
Three minutes into the second period, Friday night's hero--Christian Hanson scored to give Notre Dame a 1-0 lead.
Five minutes later, Justin Abdelkader evened the game at one with a one-timer for Michigan State.
The game remained tied at one into Van Guilder became the hero in the final six minutes.
The Irish will now face another rival, Michigan in the Frozen Four in Denver on April 10th.
Michigan won both regular season meetings.