Tennis legend Martina Navrátilová celebrates 60th birthday

The Prague-born tennis legend Martina Navrátilová is today celebrating her 60th birthday. Navrátilová, who received political asylum in the United States at the age of 18 and became a US citizen in 1981, won 18 Grand Slam titles in a glittering career. She holds the records for the most singles and doubles titles in tennis’s open era. Navrátilová has been outspoken on a number of political issues, including lesbian and gay rights.