Jan Hajek defeated Artemon Apostu Efremov 7-6 6-3 in the Spain 1 4 qualifying round on clay. The upset overturned the form book — Artemon Apostu Efremov came in leading the head-to-head 2–1. Jan Hajek narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2002-07-01 | Slovak Rep F1 | R16 | clay | Jan Hajek | 6-2 6-0 |
| 2001-03-19 | Egypt 1 2 | R32 | clay | Artemon Apostu Efremov | 7-6(7) 6-3 |
| 2001-03-19 | Egypt 1 4 | QF | clay | Artemon Apostu Efremov | 6-3 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.