Kelly Liggan defeated Maria Fernanda Landa 6-3 6-2 in the San Luis Potosi 25K round of 16 on clay. The upset overturned the form book — Maria Fernanda Landa came in leading the head-to-head 1–0. Kelly Liggan claimed a first win over Maria Fernanda Landa in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-02-01 | Mallorca 10K | R32 | clay | Maria Fernanda Landa | 6-7 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.