Woong Sun Jun defeated Mark Nielsen 7-6 3-6 6-4 in the Japan F3 round of 32 on hard. The upset overturned the form book — Mark Nielsen came in leading the head-to-head 1–0. Woong Sun Jun claimed a first win over Mark Nielsen in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-04-25 | Japan F3 | QF | carpet | Mark Nielsen | 7-6(5) 6-4 |
Averages over each player's completed matches in the selected window (14 vs 3). 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. About