Yong Il Yoon defeated Domenic Marafiote 1-6 6-2 6-1 in the Japan F4 qualifying round on hard. The upset overturned the form book — Domenic Marafiote came in leading the head-to-head 2–0. Yong Il Yoon claimed a first win over Domenic Marafiote in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-03-08 | New Zealand F2 | QF | hard | Domenic Marafiote | 3-6 6-1 6-4 |
| 2004-03-01 | New Zealand F1 | QF | hard | Domenic Marafiote | 4-6 6-4 7-5 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.