Matthew Porter defeated Tjahjono Tjahjono 6-2 6-3 in the Indonesia Masters 2 round of 16 on hard. The upset overturned the form book — Tjahjono Tjahjono came in leading the head-to-head 1–0. Matthew Porter claimed a first win over Tjahjono Tjahjono in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1997-08-25 | Indonesia Masters 3 | QF | hard | Tjahjono Tjahjono | 6-7 6-1 6-2 |