Tetsuya Chaen defeated Yuichi Sugita 6-2 6-4 in the Tokyo q16 on hard. The upset overturned the form book — Yuichi Sugita came in leading the head-to-head 2–0. Tetsuya Chaen claimed a first win over Yuichi Sugita in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-09-18 | Japan F10 | SF | carpet | Yuichi Sugita | 7-6(7) 6-4 |
| 2006-09-11 | Japan F9 | SF | carpet | Yuichi Sugita | 6-3 6-4 |
Averages over each player's completed matches in the selected window (1 vs 199). 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