Yaoki Ishii defeated Hsin Han Lee 3-6 7-6 6-2 in the Indonesia F2 round of 32 on hard. The upset overturned the form book — Hsin Han Lee came in leading the head-to-head 1–0. Yaoki Ishii claimed a first win over Hsin Han Lee in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-05-11 | China F4 | R16 | hard | Hsin Han Lee | 6-2 6-4 |