Tennis: Relieved Rafa Nadal survives test as Caroline Wozniacki turns on style

Rafael Nadal of Spain celebrating after winning his fourth-round match against Diego Schwartzman of Argentina at the Australian Open Grand Slam tennis tournament in Melbourne, Australia on Jan 21, 2018.
Rafael Nadal of Spain celebrating after winning his fourth-round match against Diego Schwartzman of Argentina at the Australian Open Grand Slam tennis tournament in Melbourne, Australia on Jan 21, 2018.PHOTO: EPA-EFE
Caroline Wozniacki of Denmark celebrating her win over Magdalena Rybarikova of Slovakia in round four on day seven at the Australian Open tennis tournament, in Melbourne, Victoria, Australia, on Jan 21, 2018.
Caroline Wozniacki of Denmark celebrating her win over Magdalena Rybarikova of Slovakia in round four on day seven at the Australian Open tennis tournament, in Melbourne, Victoria, Australia, on Jan 21, 2018.PHOTO: EPA-EFE