Edgardo Massa defeated Matias Oneille 7-5 6-3 in the Paraguay F1 semi-final on clay. The result followed the form book — Edgardo Massa came in leading the head-to-head 1–0. Edgardo Massa extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-07-31 | Argentina 2 Masters 2 | R32 | clay | Edgardo Massa | 3-6 6-1 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.