France's Caroline Garcia beat new world number one Simona Halep to win the China Open and overtake Briton Johanna Konta in the race for Singapore.
Unseeded Garcia edged Romanian Halep 6-4 7-6 (7-3) for her second successive title after victory at the Wuhan Open.
She hit 17 winners and saved nine break points in the second set to move into the eighth and final qualifying spot for the tour finals.
Konta must now reach the final in Moscow to have a chance of overtaking.
Britain's Konta will play in the Kremlin Cup, which begins on 16 October, but Garcia has put herself in pole position with a hard-fought victory over Halep.