If I were going to learn a racket sport, I might pick tennis. 
OK
I'd choose tennis because it's an Olympic sport, but it's played at all levels of society by all ages of people. 
How did tennis originate as a game of sport?
The modern game comes from Birmingham, England. It started in the late 19th century as lawn tennis. 
Do you mean lawn tennis game or the table one?
I'm referring to "real tennis" - which is one of several games sometimes called the "sport of kings". It's also known as court tennis in America. 
Any popular tennis player you know?
Serena Williams is a famous American tennis player.