Dominika Cibulkova of Slovakia celebrates her win over Maria Sharapova of Russia, showing her engagement ring during their fourth round match at the Australian Open tennis championship in Melbourne, Australia, Monday, Jan. 20, 2014. (AP Photo/Aaron Favila)

Australian Open Tennis

Dominika Cibulkova of Slovakia celebrates her win over Maria Sharapova of Russia, showing her engagement ring during their fourth round match at the Australian Open tennis championship in Melbourne, Australia, Monday, Jan. 20, 2014. (AP Photo/Aaron Favila)

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