That would include the starting goalie and leading goal scorer.

https://www.collegehockeynews.com/news/2021/04/06_Massachusetts-Loses-Four-.php

Four Massachusetts players have been ruled out of the Frozen Four due to COVID-19 contact tracing.

Carson Gicewicz, Henry Graham, Jerry Harding, and Filip Lindberg will all miss the Frozen Four, which begins on Thursday with the national semifinals. The program made an announcement this morning. In a press release, the program said that the players would miss the tournament due to “COVID-19 contact tracing protocols.”