Tatsuma Ito defeated Jae Sung An 6-0 7-6 in the Korean Rep F6 qualifying round on hard. The upset overturned the form book — Jae Sung An came in leading the head-to-head 1–0. Tatsuma Ito claimed a first win over Jae Sung An in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-03-24 | Japan F2 | SF | hard | Jae Sung An | 7-5 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.