Nathalia Rossi defeated Lucia Jara Lozano 6-4 7-6 in the Los Mochis SIN 10K qualifying round on clay. The upset overturned the form book — Lucia Jara Lozano came in leading the head-to-head 3–0. Nathalia Rossi claimed a first win over Lucia Jara Lozano in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-06-21 | Buenos Aires 10K | QF | clay | Lucia Jara Lozano | 6-2 6-3 |
| 2009-03-16 | Lima 10K | R32 | clay | Lucia Jara Lozano | 6-4 6-2 |
| 2008-11-03 | Asuncion 10K | QF | clay | Lucia Jara Lozano | 6-4 4-6 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.