Patrick Tierro defeated Seong Yoon Chung 6-4 6-4 in the Indonesia F1 round of 16 on hard. The upset overturned the form book — Seong Yoon Chung came in leading the head-to-head 1–0. Patrick Tierro claimed a first win over Seong Yoon Chung in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-08-15 | Indonesia F3 | R16 | hard | Seong Yoon Chung | 7-5 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.