Yong Il Yoon defeated Seung Kyu Park 4-6 6-1 6-2 in the Philippines F2 round of 32 on hard. The upset overturned the form book — Seung Kyu Park came in leading the head-to-head 2–0. Yong Il Yoon claimed a first win over Seung Kyu Park in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2000-05-22 | Korea F1 | F | clay | Seung Kyu Park | 7-5 7-6(2) |
| 1993-08-09 | Chinese Taipei Masters 4 | R32 | hard | Seung Kyu Park | 6-3 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.