Where was Roger Federer born?
What colour is a standard tennis ball?
In baseball, a batter is out if the umpire calls?
What is the colour of a standard tennis ball?
How many times has Federer won the Wimbledon title?
When was Roger Federer started playing tennis?
In which sport can you win the Davis Cup?
In which district of London is a very famous tennis tournament held each year?
Andy Murray is a champion in which sport?
Tennis is generally played as either singles or doubles. How many people are on the playing surface during a game of doubles?