Martina Hingis plays tennis.
The 2001 Hopman Cup ( also known as the Hyundai Hopman Cup for sponsorship reasons ) was a tennis championship won by Switzerland 's Martina Hingis and Roger Federer . Leander Adrian Paes ( born 17 June 1973 ) is an Indian professional tennis player who is considered to be one of the best doubles and mixed doubles players of all time , having achieved a career Grand Slam in each discipline . Martina Hingis . Before ligament injuries in both ankles forced her to withdraw temporarily from professional tennis in 2002 , at the age of 22 , she had won 40 singles titles and 36 doubles titles and , according to Forbes , had been the highest-paid female athlete in the world for five consecutive years , 1997 to 2001 . The US Open Series is the seven-week summer tennis season linking twelve ATP World Tour and WTA Tour tournaments together .