UPDATE: The NBA fined Marcus Smart $25,000 for his “obscene gesture.”

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Original story…

Celtic guard Marcus Smart exchanged words with a fan after he missed a three-point shot late in the fourth quarter of Boston’s 111-97 Game 2 loss to the Bulls.

A closer look clearly shows Smart also flipped the bird before pointing in the fan’s direction and putting his finger to his lips.

Smart let his frustrations get the better of him, and he could be looking at a fine as a result.

Celtic coach Brad Stevens wasn’t happy with Smart’s late-game behavior, saying, “Obviously, if he made a gesture it’s unacceptable.”

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