Tetsuya Chaen defeated Eui Jong Chang 3-6 6-4 6-3 in the Japan Masters 1 round of 16 on hard. The upset overturned the form book — Eui Jong Chang came in leading the head-to-head 2–1. Tetsuya Chaen narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1996-06-09 | Japan 1 Masters 3 | R32 | hard | Eui Jong Chang | 7-5 6-4 |
| 1995-11-06 | Japan Masters 2 | R32 | hard | Tetsuya Chaen | 7-6 6-1 |
| 1992-05-18 | Korea Masters 1 | R16 | clay | Eui Jong Chang | 6-2 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.