Mark Nielsen defeated Toshiaki Sakai 6-3 6-2 in the Japan F2 qualifying round on carpet. The result followed the form book — Mark Nielsen came in leading the head-to-head 1–0. Mark Nielsen extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-02-21 | New Zealand F2 | R16 | hard | Mark Nielsen | 6-3 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.