Kirill Kivattsev defeated Brandon Walkin 2-6 6-4 6-4 in the M15 Brcko 1 round of 32 on clay. The result followed the form book — Kirill Kivattsev came in leading the head-to-head 1–0. Kirill Kivattsev extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2023-05-31 | M25 Kiseljak 1 | R32 | clay | Kirill Kivattsev | 7-6(5) 7-6(4) |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.