Lauri Kiiski defeated Orest Tereshchuk 6-2 6-1 in the Finland F1 round of 32 on hard. The upset overturned the form book — Orest Tereshchuk came in leading the head-to-head 2–0. Lauri Kiiski claimed a first win over Orest Tereshchuk in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2003-01-20 | India F3 | QF | clay | Orest Tereshchuk | 6-0 7-5 |
| 2001-10-29 | Portugal 4 3 | QF | clay | Orest Tereshchuk | 6-4 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.