Lionel Noviski defeated Marko Neunteibl 6-4 6-2 in the Chile F1 round of 32 on clay. The upset overturned the form book — Marko Neunteibl came in leading the head-to-head 1–0, but Lionel Noviski had been the form player, winning 5 of their last 8 on clay. Lionel Noviski claimed a first win over Marko Neunteibl in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2003-04-28 | Argentina 3 | QF | clay | Marko Neunteibl | 6-3 6-3 |