Diana Ospina defeated Katarina Misic 6-0 7-6 in the Mexico City 25K round of 32 on hard. The upset overturned the form book — Katarina Misic came in leading the head-to-head 2–0. Diana Ospina claimed a first win over Katarina Misic in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-11-23 | Culiacan 10K | R16 | hard | Katarina Misic | 6-2 6-3 |
| 1998-11-16 | Los Mochis 10K | QF | hard | Katarina Misic | 4-6 7-5 6-2 |