Complex sentence: The win the program's third WCHA Playoff Championship in the school's history, it also was historic in that no 4th or 5th seeded team had won the WCHA Final Five.
Split into simpler sentences: The win the program's third WCHA Playoff Championship in the school's history. It marked the first time that that a 4th or 5th seeded team had won the WCHA Final Five.