Vlad Protopopescu defeated William Emanuel Birau 6-1 6-4 in the Bulgaria F2 q64 on clay. The result followed the form book — Vlad Protopopescu came in leading the head-to-head 2–0. Vlad Protopopescu extended the head-to-head to 3–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2016-06-20 | Romania F7 | Q64 | clay | Vlad Protopopescu | 6-3 7-6(2) |
| 2015-08-31 | Romania F15 | Q16 | clay | Vlad Protopopescu | 6-0 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.