Marcel Ioan Miron defeated Artemon Apostu Efremov 6-3 6-3 in the Romania F2 round of 32 on clay. The upset overturned the form book — Artemon Apostu Efremov came in leading the head-to-head 2–0. Marcel Ioan Miron claimed a first win over Artemon Apostu Efremov in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-08-06 | Romania F15 | SF | clay | Artemon Apostu Efremov | 6-4 6-1 |
| 2004-06-14 | Romania F7 | R32 | clay | Artemon Apostu Efremov | 6-2 7-5 |