With the Celtics down 3-1, and Jayson Tatum's future uncertain, their viability as a group is now very much in question -- a stunning fall from just a year ago.

The defending NBA champion Boston Celtics open their best-of-seven Eastern Conference semifinal series against the New York Knicks on Monday.

The Knicks stormed back from down 20 for the second-straight game to beat the Celtics in Boston, 91-90, and steal Game 2. New York is buzzing and MSG will be a madhouse for a chan

Jrue Holiday is back for the Boston Celtics, but extra emphasis will be placed on him being a facilitator for Game 2 of the Boston Celtics trying to rebound against the New York Knicks.

Will Jayson Tatum's injury usher in big changes for Celtics amid salary cap crunch? 01:26. Jayson Tatum's Achilles injury could be franchise altering for the Boston Celtics. Tatum