Peter Sychev defeated Guilherme Valdoleiros 6-3 5-7 11-9 in the M25 Idanha-a-Nova 2 q32 on hard. The upset overturned the form book — Guilherme Valdoleiros came in leading the head-to-head 1–0. Peter Sychev claimed a first win over Guilherme Valdoleiros in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2024-10-07 | M25 Sintra 1 | Q64 | hard | Guilherme Valdoleiros | 6-2 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.