Juan Antonio Saiz Panadero defeated Yon Guezuraga Cantero 6-4 6-1 in the Spain F6 round of 16 on clay. The upset overturned the form book — Yon Guezuraga Cantero came in leading the head-to-head 1–0. Juan Antonio Saiz Panadero claimed a first win over Yon Guezuraga Cantero in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1997-08-08 | Spain 7 Masters 2 | R32 | clay | Yon Guezuraga Cantero | 6-0 6-4 |