Lucia Jara Lozano defeated Vivian Segnini 7-5 6-2 in the Santa Cruz 10K round of 16 on clay. The upset overturned the form book — Vivian Segnini came in leading the head-to-head 1–0. Lucia Jara Lozano claimed a first win over Vivian Segnini in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-10-02 | Tucuman 10K | R16 | clay | Vivian Segnini | 6-0 6-3 |