This video shows how intrinsically motivated Michael Jordan is as a basketball player. He stated that he was doing and practicing it for joy and his own pleasure then success and everything just followed. He valued competitiveness inside him and others. According to this, he is probably type 3 which is high need for achievement and low fear of failure.
However, I still believe that no matter how much it seems to be intrinsic motivation, human beings, who are social animals, must have some sort of connection between intrinsic motivation and extrinsic motivation. Michael Jordan was obviously playing basketball for his own pleasure but what made it fun may connect to extrinsic motivation. But if it’s mostly integrated into one’s own internal world, and he/she has done well without any problem, it may not be necessary to clearly identify it (the extrinsic connection) and let it come to the surface.