Hiroki Moriya defeated Sun Yong Kim Jr 6-1 6-3 in the Japan F7 round of 16 on carpet. The upset overturned the form book — Sun Yong Kim Jr came in leading the head-to-head 1–0. Hiroki Moriya claimed a first win over Sun Yong Kim Jr in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-07-13 | Korean Rep F5 | R32 | hard | Sun Yong Kim Jr | 7-5 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.