US tennis great Billie Jean King, a high-profile advocate of gender equality, has urged more players to take up causes off court and help "make this world a better place".from Top Sports News- News18.com http://ift.tt/2p1Ccyj
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US tennis great Billie Jean King, a high-profile advocate of gender equality, has urged more players to take up causes off court and help "make this world a better place".