Dominika Cibulkova of Slovakia reacts after winning a point against Angelique Kerber of Germany during their women's singles match at the Sydney International tennis tournament in Sydney, Australia, Monday, Jan. 6, 2014. (AP Photo/Daniel Munoz)
Angelique Kerber of Germany reacts after winning a point against Dominika Cibulkova of Slovakia during their women's singles match at the Sydney International tennis tournament in Sydney, Australia, Monday, Jan. 6, 2014. (AP Photo/Daniel Munoz)