Andrew Rueb defeated Mark Nielsen 6-3 7-5 in the New Zealand Masters 2 semi-final on hard. The upset overturned the form book — Mark Nielsen came in leading the head-to-head 1–0. Andrew Rueb claimed a first win over Mark Nielsen in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-04-07 | New Zealand Masters 1 | R16 | hard | Mark Nielsen | 7-5 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.