Chu Huan Yi defeated Jonathan Chu 7-5 6-3 in the Japan F5 round of 32 on hard. The upset overturned the form book — Jonathan Chu came in leading the head-to-head 1–0. Chu Huan Yi claimed a first win over Jonathan Chu in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-11-07 | China F6 | R16 | hard | Jonathan Chu | 3-6 6-3 7-5 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.