Martina Hingis plays tennis.
The 1998 Fed Cup was the 36th edition of the most important competition between national teams in women 's tennis . Martina Hingis . She was named one of the `` 30 Legends of Women 's Tennis : Past , Present and Future '' by TIME in June 2011 . The US Open Series is the seven-week summer tennis season linking twelve ATP World Tour and WTA Tour tournaments together . The WTA Finals ( formerly known as the WTA Tour Championships short : WTA Championships ) , is a professional tennis tournament played annually at the end of the season for the top-ranked players on the Women 's Tennis Association ( WTA ) tour .