M. Kostyuk and J. Paolini are level 2-2 in their head-to-head since 2018 over 4 matches.
| Surface | M. Kostyuk | J. Paolini |
|---|---|---|
| Grass | 1 | 0 |
| Hard | 1 | 1 |
| Clay | 0 | 1 |
| Date | Winner | Score | Event |
|---|---|---|---|
| July 8, 2026 | M. Kostyuk | 2 - 0 | Wimbledon · Quarter-finals · grass |
| Aug. 14, 2023 | J. Paolini | 2 - 0 | WTA Cincinnati · 1/32-finals · hard |
| Oct. 10, 2022 | J. Paolini | 2 - 1 | Cluj-Napoca · 1/16-finals · clay |
| Aug. 13, 2022 | M. Kostyuk | 2 - 0 | Cincinnati · Semi-finals · hard |