Noskova converted all four of her break points. Kostyuk hit just 38 percent of her first serves and six double faults, according to official WTA statistics. He converted one of his four break points.
It was Noskova’s fifth win over a Top 10 player this season, her best in a year, according to the WTA.
WTA Finals Group 1: Provisional Ranking
| Player: | Wins and losses | Sets | Games: |
|---|---|---|---|
| 1. Linda Noskova (Czech Republic) | 1-0 | 2-0 | 12-6: |
| 2. Coco Gauff (USA) | 0-0 | 0-0 | 0-0 |
| 2. Jessica Pegula (USA) | 0-0 | 0-0 | 0-0 |
| 4. Marta Kostyuk (UKR) | 0-1 | 0-2 | 6-12: |
Gauff and Pegula played the other Group 1 match on Sunday. The top two advance to the semifinals on Saturday. Noskova will play against Gauf and Pegula in her next two matches.
