The Cleveland Cavaliers star was on Wednesday pictured heading out for dinner with a mystery brunette to Carbone Italian restaurant in New York.
A source told MailOnline that Tristan seemed ‘unfazed’ as he headed inside, also dining with basketball player Jordan Clarkson, who was not pictured.
They continued: ‘He arrived with one of his teammates in a tinted black SUV five minutes after a brunette model appeared outside of the restaurant.
‘She waited outside patiently before Tristan ducked his head out the door and brought her inside where he drank red wine and ate pasta for nearly four hours.
‘The model was seen exiting first, and walking down the block alone.
‘Tristan emerged three minutes later, making a quick sprint from the kitchen door of the restaurant and into a car.’
See full photos below.