Norbert Mazany defeated Marcos Daniel 7-5 6-2 in the Bolivia F2 round of 32 on clay. The upset overturned the form book — Marcos Daniel came in leading the head-to-head 1–0. Norbert Mazany claimed a first win over Marcos Daniel in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-09-27 | Bolivia F2 | QF | clay | Marcos Daniel | 7-6 7-6 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.