BNP Paribas WTA Finals: Singapore 2016 - Day Five [Getty Images]

SINGAPORE - OCTOBER 27: Dominika Cibulkova of Slovakia reacts in her singles match against Simona Halep of Romania during day 5 of the BNP Paribas WTA Finals Singapore at Singapore Sports Hub on October 27, 2016 in Singapore. (Photo by Julian Finney/Getty Images)

Getty Images Sport Julian Finney