Gregoire Barrere defeated Dinko Halachev 7-5 6-3 in the Bulgaria F6 round of 16 on clay. The upset overturned the form book — Dinko Halachev came in leading the head-to-head 1–0. Gregoire Barrere claimed a first win over Dinko Halachev in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-06-24 | Bulgaria F5 | R32 | clay | Dinko Halachev | 6-0 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.