Ja Morant has been fined $35,000 by the NBA for "directing inappropriate language towards a game official" and for not leaving the court soon enough.
The punishment was announced by the league on Saturday in response to the Memphis Grizzlies guard's behaviour in the 109-101 loss to the Minnesota Timberwolves on Wednesday.
With just over a minute left of the game, Morant was given a technical and ejected by the referee, which provoked an angry response from the 23-year-old.
He took to Instagram after the game to suggest officials have "too much power," adding: "you get ejected nowadays for telling a mf the same thing they told you."
Morant has been enjoying another productive season in Memphis, averaging 28.2 points, 7.3 assists and 6.4 rebounds per game for the 13-9 Grizzlies, who visit the Detroit Pistons on Sunday.