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.

NEW YORK – Boston Celtics head coach Joe Mazzulla has been fined $35,000 for aggressively pursuing and directing inappropriate language toward a game official, it was announced today by Joe Dumars, Executive Vice President, Head of Basketball Operations.

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.