Woong Sun Jun defeated David Martin 6-3 6-2 in the Japan F2 semi-final on carpet. The upset overturned the form book — David Martin came in leading the head-to-head 1–0. Woong Sun Jun claimed a first win over David Martin in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-04-26 | Japan F3 | R16 | hard | David Martin | 6-1 7-5 |
Averages over each player's completed matches in the selected window (14 vs 1). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. Small sample — read as indicative. About