Esther Vergeer was the world's invincible sporting superstar, unbeaten on the tennis court for 10 years and still at the top of her game.
원문출처 : http://edition.cnn.com/2015/02/17/tennis/the-career-of-invincible-esther-vergeer/index.html?eref=edition
원문출처 : http://edition.cnn.com/2015/02/17/tennis/the-career-of-invincible-esther-vergeer/index.html?eref=edition