How does this impact Boston's postseason hopes? More importantly, what does it do to the team's contention window in the short and medium term?

The Celtics are in a 3-1 series hole after dropping Game 4 on Monday in Madison Square Garden, shellshocked not only by the loss of Tatum but by the reality of facing elimination when the plan was to repeat as champions.

Jayson Tatum #0 of the Boston Celtics lays on the ground after being injured against the New York Knicks during the fourth quarter in Game Four of the

Jayson Tatum gets shaken up after a foul by Josh Hart causes the Celtics star to fall hard on his hand vs. the Knicks.