Gustavo Espinoza defeated Sulistyo Wibowo 6-3 6-7 6-1 in the Indonesia Masters 1 round of 16 on hard. The upset overturned the form book — Sulistyo Wibowo came in leading the head-to-head 1–0. Gustavo Espinoza claimed a first win over Sulistyo Wibowo in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-08-26 | Indonesia Masters 4 | R32 | hard | Sulistyo Wibowo | 2-6 7-6 7-5 |