Mykyta Mashtakov advanced when Viacheslav Bielinskyi retired 4-2 in the M15 Bol 2 quarter-final. Mykyta Mashtakov claimed a first win over Viacheslav Bielinskyi in five meetings, narrowing the head-to-head to 4–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2025-03-19 | M15 Rovinj 1 | R32 | clay | Viacheslav Bielinskyi | 6-1 6-1 |
| 2024-05-22 | M15 Bol 1 | R32 | clay | Viacheslav Bielinskyi | 6-2 6-2 |
| 2023-08-16 | M25 Bielsko Biala 1 | R32 | clay | Viacheslav Bielinskyi | 6-2 6-4 |
| 2023-03-22 | M15 Opatija 1 | R32 | clay | Viacheslav Bielinskyi | 6-3 6-4 |
Averages over each player's completed matches in the selected window (6 vs 2). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. Small sample — read as indicative. About