So, now that the dust has settled, it is better to let my friends on /sp/ know a well-kept Portuguese secret: Jota isn't really a name or surname of Diogo Jota. It is just a nickname. Jota is the name we give to the letter J. His name was Diogo Joseph, and there probably was another Diogo in his classroom or kid's team, so he got the Jota nickname to stand apart.

Imagine a British kid named Daniel Joseph or something like that, and he was teammates with a Daniel George. He could get called Danny Jay as a nickname. If you see ANY Portuguese player named Jota, he is probably called João or José in real life. It is ALWAYS a nickname.