Yaoki Ishii defeated Yasufumi Yamamoto 6-7 7-6 6-2 in the Japan F6 round of 32 on carpet. The result followed the form book — Yaoki Ishii came in leading the head-to-head 1–0. Yaoki Ishii extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1997-11-17 | Japan 2 Masters 3 | F | hard | Yaoki Ishii | 7-6 6-3 |
Averages over each player's completed matches in the selected window (4 vs 1). 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