Shanghai, China: Olympic silver medallist PV Sindhu will face Japan's Nozomi Okuhara in Sunday's decider at the badminton World Tour Finals for a share of the $1.5 million prize money.
The sixth-ranked Indian has been in imperious form all week in the Chinese city of Guangzhou and made it a fourth victory with a bruising defeat of Thailand's Ratchanok Intanon.
The 23-year-old Sindhu, renowned for her never-say-die attitude, needed all her resolve to finally see off Ratchanok 21-16, 25-23 in a captivating semi-final.
In the other last-four clash on Saturday in the women's draw, Okuhara, a place above Sindhu at five in the world, emerged from an all-Japanese clash against Akane Yamaguchi.
Okuhara defeated her compatriot, who is ranked two in the world, 21-17, 21-14.
The men's semi-finals were due to take place later Saturday.
Japan's world champion Kento Momota plays Son Wan-ho of South Korea and surprise package Sameer Verma of India takes on Shi Yuqi of China.