Nathan Healey defeated Tetsuya Chaen 6-4 7-6 in the Japan F12 final on hard. The upset overturned the form book — Tetsuya Chaen came in leading the head-to-head 2–0, but Nathan Healey had been the form player, winning 4 of their last 7 on hard. Nathan Healey claimed a first win over Tetsuya Chaen in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1997-09-28 | Australia 3 Masters 3 | R32 | hard | Tetsuya Chaen | 6-2 7-5 |
| 1997-03-02 | Australia 1 Masters 4 | R32 | clay | Tetsuya Chaen | 6-4 6-2 |
Averages over each player's completed matches in the selected window (12 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