Oscar Bustos defeated Americo Venero Montes 6-4 6-7 6-4 in the Bolivia Chile Masters 2 round of 32 on clay. The result followed the form book — Oscar Bustos came in leading the head-to-head 2–0. Oscar Bustos extended the head-to-head to 3–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-10-21 | Bolivia Chile Masters 1 | R16 | clay | Oscar Bustos | 6-4 4-6 7-6 |
| 1991-09-23 | Ecuador Peru Masters 3 | SF | clay | Oscar Bustos | 6-7 6-4 6-3 |