Mark Nielsen defeated Hyung Tae Kwon 6-3 6-4 in the Japan F4 round of 32 on clay. Mark Nielsen extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-04-18 | Japan F2 | R16 | clay | Hyung Tae Kwon | 2-6 6-1 7-6(9) |
| 2004-04-19 | Japan F2 | R16 | carpet | Mark Nielsen | 6-3 6-2 |