She joins Simona Halep, Garbiñe Muguruza, Maria Sharapova, Petra Kvitova, Agnieszka Radwanska, Angelique Kerber and Flavia Pennetta in the singles field of eight.
Safarova will make her tournament debut at the WTA Finals. She has also qualified in doubles this year with partner Bethanie Mattek-Sands.
“I am really excited to qualify for the WTA Finals for the first time,” said Safarova.
“It has been a dream year and to be one of the eight qualifiers in singles and also compete in the doubles is something that makes me very proud.
“There have already been so many highlights this year, and I hope to finish it playing some more great tennis in front of the amazing Singapore crowd.”
Safarova won her sixth career singles title, and first at the Premier-level, at the Qatar Total Open – Doha.
She reached two further singles finals, her first career Grand Slam final at Roland Garros and the Connecticut Open.
Partnering with Mattek-Sands, Safarova won two Grand Slam doubles titles at the Australian Open and Roland Garros and two WTA Premier titles at the Porsche Tennis Grand Prix – Stuttgart and Rogers Cup – Toronto.
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