Maria Julieta Lillo advanced when Sybille Bammer retired 7-6 5-1 in the Guayaquil 10K round of 32. Maria Julieta Lillo claimed a first win over Sybille Bammer in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-09-21 | Tucuman 25K | R32 | clay | Sybille Bammer | 6-3 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.