This boy is the nephew of Joshua Burgin.
He is only mentioned in "The One With Rachel's Crush" where Rachel tries to make a date with Joshua by inviting him to a Knicks basketball game and shows him 2 tickets. Joshua is excited at this and he tells Rachel that his nephew is crazy about the Knicks. Unfortunately for Rachel, she forgot to say that one of the tickets was for her, meaning the tickets were for her and Joshua; And as a result, Joshua ended up going to the game with his nephew.
- It's likely that Joshua's parents are his grandparents because Joshua said that he had gotten divorced.