In the history of tennis, eight men have completed the career grand slam of winning all four tennis majors.
원문출처 : https://www.cnn.com/2018/08/28/tennis/us-open-peter-polansky-luckiest-loser-spt-intl/index.html
원문출처 : https://www.cnn.com/2018/08/28/tennis/us-open-peter-polansky-luckiest-loser-spt-intl/index.html