Artemon Apostu Efremov defeated Nickolai Dyachok 6-1 6-4 in the Romania F13 round of 16 on clay. The result followed the form book — Artemon Apostu Efremov came in leading the head-to-head 2–1. Artemon Apostu Efremov extended the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-08-01 | Romania F14 | QF | clay | Nickolai Dyachok | 7-6(4) 6-4 |
| 2004-07-19 | Romania F12 | QF | clay | Artemon Apostu Efremov | 6-1 7-6(5) |
| 2002-08-19 | Russia F2 | QF | clay | Artemon Apostu Efremov | 7-6(4) 6-3 |