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.

The Knicks head back to Madison Square Garden on Saturday, riding a wave of momentum and looking to tighten their grip on the series against the Celtics in Game 3. After back-to-back gutsy wins on the road,

The Boston Celtics could not secure the win in Game 4 against the New York Knicks. To make matters worse, Jayson Tatum left the game due to an injury. After the final whistle, Jaylen Brown addressed the situation and shared his thoughts on the team's star getting hurt.

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.