Cuban, 66, buried his face in his hands and shook his head upon hearing Mavericks fans shout, "Fire Nico!" When he eventually lifted his head, Cuban had a dour expression on his face.

Mark Cuban was not in a good place on Wednesday when Luka Doncic returned to Dallas for the first time as a visiting player. With Cuban in attendance,

Mark Cuban's reaction to Mavericks fans chanting 'Fire Nico' was caught on camera as Nico Harrison continues to receive backlash.