Jayson Tatum suffered a ruptured right Achilles tendon during the Boston Celtics' playoff defeat to the New York Knicks, the NBA champions confirmed on Tuesday, leaving the basketball superstar facing a lengthy spell on the sidelines.

Boston Celtics assistant coach Amile Jefferson stepped through a door in the team’s locker room late Monday night and walked toward Jayson Tatum’s mother, Brandy Cole-Barnes. Jefferson, one of Tatum’s closest friends dating back to their time as Duke teammates,

BOSTON (AP) — Anthony Edwards and the Minnesota Timberwolves are on the brink of their second straight trip to the Western Conference finals. In the East, Jalen Brunson and the New York Knicks are a win away from reaching the conference finals for the first time in 25 years.

Latest on Boston Celtics star's status for Game 5 of NBA playoffs series against New York Knicks on Wednesday, May 14.

The Celtics’ worst fears were confirmed. Their nightmare became reality. Jayson Tatum did in fact tear his right Achilles tendon in Monday’s Game 4 loss to the Knicks. He underwent surgery Tuesday, the team announced. It’s a devastating injury that completely changes the Celtics’ outlook for the near future.