Mark Nielsen defeated Doug Root 6-3 4-6 6-4 in the USA F24 round of 32 on hard. 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 |
|---|---|---|---|---|---|
| 2002-03-04 | New Zealand F2 | R16 | hard | Mark Nielsen | 6-2 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.