Ti Chen defeated Tetsuya Chaen 6-3 6-0 in the Japan F1 round of 16 on hard. The upset overturned the form book — Tetsuya Chaen came in leading the head-to-head 1–0, but Ti Chen had been the form player, winning 3 of their last 7 on hard. Ti Chen claimed a first win over Tetsuya Chaen in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-10-23 | Japan F12 | QF | hard | Tetsuya Chaen | 7-6(5) 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.