Novak Djokovic finished perfect in the group stage at the World Tour Finals after crushing David Goffin -- and clashing with the chair umpire.
원문출처 : http://www.cnn.com/2016/11/17/tennis/atp-world-tour-finals-djokovic-goffin-thiem-raonic/index.html
원문출처 : http://www.cnn.com/2016/11/17/tennis/atp-world-tour-finals-djokovic-goffin-thiem-raonic/index.html