The Boston Celtics suffered a major loss during their series against The New York Knicks, and it was not the series loss to the Knicks, rather a devastating injury to their franchise superstar, Jayson Tatum.

If a player is seriously injured, his team can apply for the disabled-player exception to replace him. An NBA-designed physician would have to determine that the player is “substantially more like than not” to be out through June 15 next season for it to be granted.

Despite the tough ending and the Celtics losing to the New York Knicks in six games, Tatum still put together another standout season. He averaged 26.8 points on 45.2% shooting, along with 8.7 rebounds and 6.0 assists per game. His scoring ranked fifth in the NBA, and he helped lead the Celtics to a 61-21 record.