Nathan Seateun defeated Svyatoslav Gulin 7-6 3-6 6-3 in the M15 Melilla 1 round of 32 on clay. The upset overturned the form book — Svyatoslav Gulin came in leading the head-to-head 1–0. Nathan Seateun claimed a first win over Svyatoslav Gulin in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2023-09-20 | M15 Kursumlijska Banja 9 | R32 | clay | Svyatoslav Gulin | 6-1 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.