Jay Williams and Udonis Haslem break down what the Celtics need to do to force a Game 6 vs. the Knicks.

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 suffered a torn Achilles tendon during Monday night's Game 4 of the Eastern Conference semifinal series between the Boston Celtics and New York Knicks. The Celtics star left the game late in the fourth quarter after he went down on the court from the non-contact injury.