Walter Grinovero defeated Rodrigo Cerdera 7-5 7-6 in the Uruguay F1 semi-final on clay. The upset overturned the form book — Rodrigo Cerdera came in leading the head-to-head 1–0. Walter Grinovero claimed a first win over Rodrigo Cerdera in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-11-01 | Argentina F4 | R32 | clay | Rodrigo Cerdera | 6-0 6-0 |