Tasuku Iwami defeated Mirko Pehar 5-7 7-6 6-4 in the Japan F1 round of 32 on carpet. The result followed the form book — Tasuku Iwami came in leading the head-to-head 2–0. Tasuku Iwami extended the head-to-head to 3–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-11-02 | Thailand F1 | R32 | hard | Tasuku Iwami | 6-4 4-6 7-5 |
| 1998-08-01 | Italy 3 Masters 1 | R32 | clay | Tasuku Iwami | 7-6 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.