E. Navarro leads the head-to-head 4-1 since 2018 against M. Kostyuk, over 5 matches.
| Surface | M. Kostyuk | E. Navarro |
|---|---|---|
| Grass | 1 | 2 |
| Hard | 0 | 2 |
| Date | Winner | Score | Event |
|---|---|---|---|
| July 4, 2026 | M. Kostyuk | 2 - 1 | Wimbledon · 1/16-finals · grass |
| June 22, 2025 | E. Navarro | 2 - 0 | Bad Homburg · 1/16-finals · grass |
| June 16, 2025 | E. Navarro | 2 - 0 | Berlin · 1/16-finals · grass |
| Aug. 30, 2024 | E. Navarro | 2 - 1 | WTA US Open · 1/16-finals · hard |
| Aug. 9, 2024 | E. Navarro | 2 - 0 | Toronto · 1/8-finals · hard |