Who was the first major athlete in the Soviet Union to demand publicly to keep their tournament earnings was Natasha Zvereva or Katarina Srebotnik?
Natasha Zvereva Natasha Zvereva, or Zverava, (born Natallya Maratawna Zverava; Belarusian: Наталля Маратаўна Зверава; 16 April 1971) is a former tennis player from Belarus. Zvereva was the first major athlete in the Soviet Union to demand publicly that she should be able to keep her tournament earnings. The team of Zvereva and Gigi Fernández won more women's doubles titles and Grand Slam women's doubles championships than any other team since that of Martina Navratilova and Pam Shriver.
Petra Kvitová Petra Kvitová (] ; born 8 March 1990) is a Czech professional tennis player. Known for her powerful left-handed groundstrokes and variety, Kvitová turned professional in 2006 and has won 20 career singles titles, including two Grand Slam titles at Wimbledon. She is also an Olympic medalist, capturing the bronze medal at the 2016 Rio Olympics. She reached her career-high ranking of world no. 2 on 31 October 2011 and as of 18 September 2017, is ranked world no. 14 by the Women's Tennis Association (WTA). As such, Kvitová is the current second highest-ranked Czech and the second highest-ranked left-handed player in the WTA behind Karolína Plíšková and Germany's Angelique Kerber, respectively.