Jessica Pegula leads 4 to 2 over 6 singles meetings since 2022. Last meeting on 26/04/2026 at Mutua Madrid Open - Madrid.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 26/04/2026 | Mutua Madrid Open - Madrid | Round 3 | clay | Kostyuk | 1-6 2-3 |
| 10/01/2026 | Brisbane International - Brisbane | Semi-final | hard | Kostyuk | 0-6 0-3 |
| 30/09/2025 | China Open - Beijing | Round 4 | hard | Pegula | 3-6 7-6(4) 1-6 |
| 24/03/2025 | Miami Open - Miami | Round 4 | hard | Pegula | 2-6 3-6 |
| 20/01/2023 | Australian Open - Melbourne | Round 3 | hard | Pegula | 6-0 6-2 |
| 17/08/2022 | Western & Southern Open - Cincinnati | Round 2 | hard | Pegula | 6-7(5) 6-1 6-2 |
| clay | Pegula 0 - 1 Kostyuk |
| hard | Pegula 4 - 1 Kostyuk |
| 2026 | Pegula 0 - 2 Kostyuk |
| 2025 | Pegula 2 - 0 Kostyuk |
| 2023 | Pegula 1 - 0 Kostyuk |
| 2022 | Pegula 1 - 0 Kostyuk |
276 wins, 108 losses since 2021 (71.9%).
Last matches: V V V D V
171 wins, 107 losses since 2021 (61.5%).
Last matches: V V V D V
Jessica Pegula leads 4 to 2 over 6 singles meetings since 2022.
On 26/04/2026, at Mutua Madrid Open - Madrid (Round 3): Marta Kostyuk won 1-6 2-3.