Kaloyan Valchev defeated Vasil Shandarov 7-5 2-6 7-5 in the Bulgaria F1 q16 on hard. The upset overturned the form book — Vasil Shandarov came in leading the head-to-head 1–0. Kaloyan Valchev claimed a first win over Vasil Shandarov in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2015-06-08 | Bulgaria F1 | R32 | clay | Vasil Shandarov | 6-1 6-4 |
Averages over each player's completed matches in the selected window (3 vs 1). ATP, WTA & Challenger.
wins 59% of points on serve vs Shandarov V.
wins 58% of points on serve vs Valchev K.
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