Sulistyo Wibowo defeated Gustavo Espinoza 2-6 7-6 7-5 in the Indonesia Masters 4 round of 32 on hard. The upset overturned the form book — Gustavo Espinoza came in leading the head-to-head 1–0. Sulistyo Wibowo claimed a first win over Gustavo Espinoza in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-08-26 | Indonesia Masters 1 | R16 | hard | Gustavo Espinoza | 6-3 6-7 6-1 |