Kotaro Miyachi defeated Takahiro Terachi 6-3 6-0 in the Japan 2 Masters 1 round of 16 on hard. The upset overturned the form book — Takahiro Terachi came in leading the head-to-head 3–2. Kotaro Miyachi narrowed the head-to-head to 3–3.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-11-25 | Japan F6 | QF | hard | Takahiro Terachi | 6-0 7-5 |
| 1998-06-29 | Japan 1 Masters 1 | SF | hard | Takahiro Terachi | 6-1 6-3 |
| 1998-06-29 | Japan 1 Masters 4 | F | hard | Kotaro Miyachi | 6-2 6-0 |
| 1997-11-17 | Japan 2 Masters 4 | R32 | hard | Takahiro Terachi | 5-7 6-4 6-1 |
| 1997-07-07 | Japan 1 Masters 4 | R16 | hard | Kotaro Miyachi | 6-3 1-6 6-4 |
Averages over each player's completed matches in the selected window (2 vs 11). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. Small sample — read as indicative. About