Iga Swiatek leads 5 to 1 over 6 singles meetings since 2021. Last meeting on 08/08/2026 at National Bank Open - Toronto.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 08/08/2026 | National Bank Open - Toronto | Round 4 | hard | Swiatek | 6-3 1-6 2-6 |
| 31/05/2026 | French Open - Paris | Round 4 | clay | Kostyuk | 7-5 5-1 |
| 11/08/2025 | Cincinnati Open - Cincinnati | Round 3 | hard | Swiatek | |
| 16/08/2024 | Western & Southern Open - Cincinnati | Round 3 | hard | Swiatek | 6-2 6-2 |
| 16/03/2024 | BNP Paribas Open - Indian Wells | Semi-final | hard | Swiatek | 6-2 6-1 |
| 07/06/2021 | French Open - Paris | Round 4 | clay | Swiatek | 3-6 4-6 |
| hard | Kostyuk 0 - 4 Swiatek |
| clay | Kostyuk 1 - 1 Swiatek |
| 2026 | Kostyuk 1 - 1 Swiatek |
| 2025 | Kostyuk 0 - 1 Swiatek |
| 2024 | Kostyuk 0 - 2 Swiatek |
| 2021 | Kostyuk 0 - 1 Swiatek |
171 wins, 107 losses since 2021 (61.5%).
Last matches: V V V D V
322 wins, 73 losses since 2021 (81.5%).
Last matches: V V D V V
Iga Swiatek leads 5 to 1 over 6 singles meetings since 2021.
On 08/08/2026, at National Bank Open - Toronto (Round 4): Iga Swiatek won 6-3 1-6 2-6.