Gabriel Donev defeated Dusan Rajic 6-4 6-7 7-5 in the M15 Ulcinj 2 round of 32 on clay. The result followed the form book — Gabriel Donev came in leading the head-to-head 1–0. Gabriel Donev extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-07-26 | M15 Novi Sad 1 | Q32 | clay | Gabriel Donev | 6-2 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.