By Jacque Talbot Sarah Tulloch
Martina Hingis was forced to retire from tennis at the age of 27 after she was handed a two-year ban when she tested positive for cocaine at Wimbledon in 2007
By Jacque Talbot Sarah Tulloch
Martina Hingis was forced to retire from tennis at the age of 27 after she was handed a two-year ban when she tested positive for cocaine at Wimbledon in 2007