Martina Hingis is a professional soccer player.
Martina Hingis . After several surgeries and long recuperations , Hingis returned to the WTA tour in 2006 , climbing to world No. 6 and winning three singles titles , and also receiving the Laureus World Sports Award for Comeback of the Year . The Women 's Tennis Association ( WTA ) , founded in 1973 by Billie Jean King , is the principal organizing body of women 's professional tennis .