Marcos Daniel defeated Norbert Mazany 7-6 7-6 in the Bolivia F2 qualifying round on clay. The upset overturned the form book — Norbert Mazany came in leading the head-to-head 1–0. Marcos Daniel claimed a first win over Norbert Mazany in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-09-28 | Bolivia F2 | R32 | clay | Norbert Mazany | 7-5 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.