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 Boston Celtics could not tie the series at 2-2 and fell in dramatic fashion to the New York Knicks in Game 4, but most importantly, they seem to have lost Jayson Tatum to a severe foot injury.

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

For New York, Jalen Brunson (27 points) and Karl-Anthony Towns (21 points) were the only Knicks above 12 points as the team struggled with 20% from three and 40% from the field. Jayson Tatum (22) and Jaylen Brown (19) combined for 41 points on 15-of-38 shooting (39.4%) for Boston with most of the damage coming in the first half.

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.