Defending champion Elina Svitolina maintained her 100% delusion on the WTA Finals in China with a laborious-fought use over American alternate Sofia Kenin.
Svitolina took her sixth match discover use 7-5 7-6 (12-10) in after Kenin had an completely different to help out each construct.
The Ukrainian was once already assured of a semi-last construct and performs Swiss seventh seed Belinda Bencic on Saturday.
Kenin, 20, changed the injured Bianca Andreescu on Thursday and had no probability of progressing to the final 4.
After additionally incomes straight-build wins over Romanian fifth seed Simona Halep and 2nd seed Karolina Pliskova of the Czech Republic, Svitolina needed to growth her combating qualities to edge earlier Kenin in truthful over two hours.
Afterward Friday, Wimbledon champion Halep performs Pliskova, with the winner securing a construct throughout the diverse semi-last in opposition to Australian world no 1 Ashleigh Barty.
The winners meet throughout the final in Shenzhen on Sunday at 11: 30 GMT.
- Keep scores, time desk and outcomes
- Indicators: To find tennis recordsdata despatched to your mobile phone