Adrian Ungur defeated Artemon Apostu Efremov 6-4 6-1 in the Romania F4 qualifying round on clay. Adrian Ungur extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-05-09 | Romania F2 | R16 | clay | Adrian Ungur | 6-3 6-3 |
| 2004-07-26 | Romania F13 | SF | clay | Artemon Apostu Efremov | 6-4 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.