Soong Jae Cho defeated Sun Yong Kim Jr 6-7 6-0 2-0 in the Korea F8 round of 32 on hard. Soong Jae Cho extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-08-03 | China F5 | QF | hard | Sun Yong Kim Jr | 6-3 6-4 |
| 2009-07-13 | Korean Rep F5 | R16 | hard | Soong Jae Cho | 7-6(6) 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.