Memphis Grizzlies superstar Ja Morant has officially been ruled out of Game 4 against the Golden State Warriors due to a knee injury he suffered in Game 3.

Morant, who was the winner of this season's Most Improved Player award, has averaged 38.3 points, 8.3 assists and 6.7 rebounds per game through the first three fixtures of the series.

It appeared Morant had a knee-on-knee clash in Game 3, but the Grizzlies highlighted a sequence where Morant got tangled up with Jordan Poole during a double-team near half-court, where Poole appeared to grab Morant's knee and pull it.

While it seemed innocuous, with the NBA announcing Poole would face no repercussions, Morant tweeted a video of the incident immediately after the game with the caption "broke the code" – before deleting the tweet.

The "code" Morant is referencing touches on a comment made by Warriors coach Steve Kerr, when he said Grizzlies guard Dillon Brooks "broke the code" with his flagrant two foul on Gary Payton II that caused a fractured elbow and sidelined the defensive specialist through at least the rest of the series.

While Morant's absence will be clearly felt, the Grizzlies may be the team most equipped to survive for a game without their star, finishing the regular season with a 20-5 record in the 25 games Morant missed.

Game 4 will be played at the home of Golden State, before returning to Memphis for Game 5.