Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
The 1976 Citizen's Classic, also known as the Hong Kong Open, was a men's tennis tournament played on outdoor hard courts in Hong Kong. It was the fourth edition of the event and was held from 8 November through 14 November 1976. The tournament was part of the Two Star tier of the 1976 Grand Prix tennis circuit. Fourth-seeded Ken Rosewall won the singles title.
Ken Rosewall
Hank Pfister / 
Ilie Năstase 1–6, 6–4, 7–6, 6–0
Anand Amritraj /