Dmitri Tomashevich defeated Rainer Gunther 6-7 6-2 6-1 in the Turkey 1 Masters 1 round of 16 on clay. The upset overturned the form book — Rainer Gunther came in leading the head-to-head 1–0, but Dmitri Tomashevich had been the form player, winning 1 of their last 4 on clay. Dmitri Tomashevich claimed a first win over Rainer Gunther in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-01-05 | India F2 | R32 | grass | Rainer Gunther | 7-5 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.