Vilmarie Castellvi defeated Mathilde Johansson 6-0 6-2 in the Poza Rica 25K round of 32 on hard. The upset overturned the form book — Mathilde Johansson came in leading the head-to-head 1–0, but Vilmarie Castellvi had been the form player, winning 2 of their last 7 on hard. Vilmarie Castellvi claimed a first win over Mathilde Johansson in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-04-04 | Coatzacoalcos 25K | R32 | hard | Mathilde Johansson | 7-5 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.