Tetsuya Chaen defeated Toshihide Matsui 6-3 6-3 in the Japan F2 round of 32 on carpet. The upset overturned the form book — Toshihide Matsui 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 |
|---|---|---|---|---|---|
| 2007-09-10 | Japan F8 | QF | hard | Toshihide Matsui | 6-2 6-3 |
| 2001-09-24 | Japan F8 | R32 | hard | Toshihide Matsui | 6-4 6-3 |
| 2001-03-12 | Japan F1 | R16 | carpet | Tetsuya Chaen | 7-6(5) 6-1 |
Averages over each player's completed matches in the selected window (1 vs 98). 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