Sofia Luini defeated Estefania Donnet 7-5 6-2 in the Santa Cruz 10K round of 32 on clay. The upset overturned the form book — Estefania Donnet came in leading the head-to-head 1–0. Sofia Luini claimed a first win over Estefania Donnet in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-08-10 | Buenos Aires 10K | R16 | clay | Estefania Donnet | 6-4 1-6 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.