Dallas Mavericks general manager Nico Harrison was the most ridiculed man on Thursday. Even on the night the Los Angeles Lakers entered the arena at the American Airlines Center.

Harrison observes an emotional Luka Doncic from a distance. The Mavericks general manager watched a touching video tribute to Doncic near the exit of the aisle. Mavericks fans clearly spotted him, leaving the 52-year-old GM feeling their displeasure.

Fans erupted with "Fire Niko!" The shouts resounded through the home court of the Mavericks. Not only could Harrison hear the shouts clearly, his facial reaction said it all: he wasn't the most popular person in the arena. The scene captured by Mavericks reporter Landon Thomas.

Harrison was not present at the pregame celebrations involving the former Mavericks star. Fans believe Doncic slammed him with a new ad before the game.

Luka Doncic's ad exacerbated the Mavericks' pain for Nico Harrison

This Western Conference matchup became one of the most watched basketball games in the final stage of the regular season. For the first time ever, Doncic walked out of the visiting locker room at the American Airlines Center.

Doncic convinced many fans that he had slammed Harrison before the game. All this through a new Gatorade ad.

The new ad shows Doncic wearing his new Lakers jersey sitting on the ground and dribbling. Doncic eventually got up from his seat. But the title reads "No Love".? Doncic has a towel that seems to spell out "traitor" — another taunt to Harrison.

Doncic ended up hitting his former club hard in terms of scoring. The former Mavericks star scored a stunning 85 points in the first half. Doncic hit a step-back three-pointer on Anthony Davis — the same Davis Harrison got from the Lakers trade in early February. His Lakers trailed 0-0 early in the fourth quarter.

But then again, Harrison was taunted from afar, near the exit. His facial expressions made him aware of what he had done and how his own home fans perceived him.