Joe Mazzulla’s Christmas greetings were costly. The NBA fined the Boston Celtics coach $35,000 on Saturday “for aggressively pursuing and directing inappropriate language toward a game official” at the end of his team’s loss to the Chicago Bulls on Thursday night.

The NBA announced on Saturday that Mazzulla was fined $35,000 for "aggressively pursuing and directing inappropriate language toward a game official" after the Celtics lost 108-117 to the Chicago Bulls. Once the buzzer sounded, Mazzulla went straight to the ref and could be seen yelling and pointing in anger.

The NBA has slapped Boston Celtics head coach Joe Mazzulla with a hefty $35,000 fine for his fiery conduct during Thursday's 117-108 loss to the Chicago Bulls. The league cited Maz