Gabriel Donev defeated Ivan Nedelko 6-4 6-1 in the M15 Novi Sad 1 round of 32 on clay. The upset overturned the form book — Ivan Nedelko came in leading the head-to-head 1–0. Gabriel Donev claimed a first win over Ivan Nedelko in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-05-26 | M15 Novomoskovsk 1 | R32 | clay | Ivan Nedelko | 6-3 6-4 |
Averages over each player's completed matches in the selected window (1 vs 25). 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