Tennis Connections Quiz 2

The connections quiz round is a good way to test teams during a standard pub quiz night.
 
It features 9 general knowledge quiz questions and question 10 is "Guess the connection between all, or part of each answer"
 
The answer to this quiz is Tennis
Example questions;

By what name was Muhammad Ali originally known?

Which playing card gave Motorhead a top 20 hit in 1980?