Rodrigo Navarro defeated Ernesto Diaz 6-4 7-6 in the Bolivia Chile Masters 2 round of 32 on clay. The upset overturned the form book — Ernesto Diaz came in leading the head-to-head 1–0. Rodrigo Navarro claimed a first win over Ernesto Diaz in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-09-23 | Ecuador Peru Masters 1 | R32 | clay | Ernesto Diaz | 6-2 6-4 |