Isaiah Thomas has been fined $25,000 by the NBA for "directing inappropriate language" at a fan of the Washington Wizards during Game 3.

According to the individual who took the video, the fan was heckling Thomas, who was on the bench at the time, throughout the game.

Thomas pointed at the fan and responded with, "I will f--- you up, and you know that."

"Obviously there's a line that you can't cross and, ultimately, get fined for," Brad Stevens said. "That's my reaction to it. I think that if he could take it back he would."