D. Dzumhur and H. Gaston are level 1-1 in their all-time head-to-head over 2 matches.
| Surface | D. Dzumhur | H. Gaston |
|---|---|---|
| Clay | 1 | 1 |
| Date | Winner | Score | Event |
|---|---|---|---|
| July 21, 2026 | H. Gaston | 0 - 0 | Estoril · 1/16-finals · clay |
| July 17, 2025 | D. Dzumhur | 1 - 2 | Bastad · 1/8-finals · clay |