Tatum dropped to the floor, slapped the hardwood and pleaded for his team to call a timeout after Knicks forward OG Anunoby converted a fastbreak dunk. Tatum grimaced in pain for a few more seconds before trainers attended to him on the floor.

Jayson Tatum's Achilles injury could see him miss most of next season, placing further pressure on the Boston Celtics' offseason activity with major roster changes expected

Jayson Tatum has undergone successful surgery to repair a ruptured right Achilles tendon, the Boston Celtics announced Tuesday. The Celtics expect Tatum to make a full recovery, but provided no timetable for his return.

Midway through the fourth quarter in Game 4 of an Eastern Conference semifinal series, Boston Celtics forward Jayson Tatum drove left, split the defense and muscled home a layup, tying Larry Bird and John Havlicek for the most 40-point playoff games in franchise history. The prime of his career had just begun.

The Celtics’ worst fears were confirmed. Their nightmare became reality. Jayson Tatum did in fact tear his right Achilles and underwent surgery on Tuesday, the team announced. He is likely to miss all of next season as a result.

The defending NBA champion Boston Celtics are on the brink of elimination after losing Game 4 to the New York Knicks at Madison Square Garden.