Phoenix Suns superstar Kevin Durant had a pregame exchange with two fans ahead of Thursday night’s game … confronting the Mavericks supporters after being called a “bitch.”

The whole exchange was captured on video … showing KD running out of the tunnel for warmups — but coming to a screeching halt after hearing the word hurled his way.

Durant quickly approached the two fans — who appeared to have great seats for the game — and they went back and forth for a good 30 seconds before the two-time NBA champ waved his hand in disgust and rejoined his teammates.

Of course, the NBA has a history of kicking heckling fans out of games at a player’s request … and it appeared the pair of Dallas backers were about to be escorted out of American Airlines Center before Durant returned to the scene and intervened.

It’s unclear what was said between Durant and the fans … but according to reporter Jonah Javad, the hooper saved them from getting the boot.

As for the game, Durant finished with 23 points and six rebounds … but the Suns fell to the Mavs, 123-113.

So despite the pregame spat, those two fans probably went home happy.