Roger Federer announces retirement from professional tennis

The 20-time Grand Slam champion has played 1,500 matches over a 24-year career

Emirates back as official airline of the US Open Tennis Championships

US Open Tennis Championships: Emirates returns as official airline

The annual Grand Slam tournament is taking place in Queens, New York from August 29 through September 11

Expo 2020 Dubai records 14.7 million visits as of February 21

Domestic visits surged 128 per cent in the past six weeks