Reigning champion Agnieszka Radwanska and Karolina Pliskova became the latest players to qualify for the BNP Paribas WTA Finals Singapore presented by SC Global on Tuesday.
Defeat for Dominika Cibulkova at the China Open guaranteed Radwanska and recent US Open finalist Pliskova their places at the season-ending showpiece, joining Angelique Kerber, Serena Williams and Simona Halep in the singles field.
"Congratulations to Aga and Karolina on qualifying for the BNP Paribas WTA Finals Singapore presented by SC Global," said WTA CEO Steve Simon. "Both have had incredible years, each winning multiple WTA titles - an impressive feat very few players accomplish each year. We are thrilled to see Aga back in Singapore to defend the Billie Jean King Trophy, as well as Karolina, who will compete at her first WTA Finals."
Radwanska has built on her success at last year's tournament, enjoying another wonderfully consistent year. Titles in Shenzhen and New Haven have been backed up by deep runs at the Australian Open, Doha, Indian Wells, Stuttgart and Tokyo.
A fixture at the season finale for the past five years, the Pole is looking forward to the challenge of defending her crown. "It's the goal of everyone to qualify for the WTA Finals, and I'm happy to be returning to defend my title," Radwanska said. "I've played at Singapore for a few years now, and qualifying again this year means I've had a great season - to be in the Top 8. It won't be easy to defend my title, but that's the goal. It will be exciting and a challenge to see different names and faces in this year's field."
Pliskova, meanwhile, announced herself to the wider sporting world with her run to the final of the US Open, shocking Serena Williams in the semifinals before coming up just short in a thrilling final against Angelique Kerber.
Last year, the Czech came within touching distance of qualifying, and was understandably delighted to have done so this time around: "I'm very excited that I have qualified for the WTA Finals in Singapore," said Pliskova. "It's been an amazing year so far and the best is coming at the WTA Finals. I hope to see many fans in Singapore and that many more follow my matches from around the world. Wish me luck - I am excited to be there for the first time in my life."
The current Road to Singapore leaderboard as follows (as of October 1, 2016):
Angelique Kerber (GER) - Q
Serena Williams (USA) - Q
Garbiñe Muguruza (ESP)
Dominika Cibulkova (SVK)
Carla Suárez Navarro (ESP)
Madison Keys (USA)
Johanna Konta (GBR)