Erika Clarke Magana defeated Anna Bartenstein 7-5 6-3 in the San Cristobal 10K qualifying round on hard. The upset overturned the form book — Anna Bartenstein came in leading the head-to-head 2–0, but Erika Clarke Magana had been the form player, winning 2 of their last 5 on hard. Erika Clarke Magana claimed a first win over Anna Bartenstein in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-09-26 | Morelia 10K | QF | hard | Anna Bartenstein | 6-4 6-1 |
| 2005-05-02 | Obregon 10K | R16 | hard | Anna Bartenstein | 6-3 6-4 |