Facing elimination and with Jayson Tatum sidelined, the Celtics kept their season alive in Game 5 against the Knicks.

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.

Regional rivalries were cast aside when Boston Celtics star Jayson Tatum went down with a late injury against the New York Knicks.

During an appearance on ESPN's "NBA Today," NBA insider Marc J. Spears shared details of an emotional conversation between Tatum and his father following the devastating injury. According to Spears, Tatum asked his father, "Why me, dad? Why me? Why does this have to happen to me?"

Jayson Tatum heard it all after the Celtics blew Game 2 to the Knicks. After a bounce-back performance, he spoke about the perspective needed when it comes to being Boston's top player.

Meanwhile, Tatum, who is 12 for 43 in this Knicks series overall (including 5 of 20 from 3), has missed eight of 10 shots and all four of his 3-pointers in 19 clutch minutes so far in this postseason. It's an extension of a regular season in which he shot 6 for 31 from 3 and just 65% from the free-throw line during clutch minutes.