In a film session between Games 4 and 5 of their Eastern Conference semifinal series, as the Celtics prepared for their first game against the New York Knicks without Jayson Tatum, veterans Jaylen Brown and Al Horford challenged the remaining members of the team to rally for their injured superstar.

Forty-eight hours after losing their centerpiece superstar to a potentially career-altering Achilles injury, the Celtics delivered an emphatic message to the New York Knicks: Even without Jayson Tatum,

The Boston Celtics lost Game 4 and saw Jayson Tatum suffer a potentially serious injury on Monday night against the New York Knicks. The Knicks won 121-113 thanks to a strong second half and erased another large deficit,