Larissa Carvalho defeated Mathilde Johansson 7-5 7-5 in the San Luis Potosi 25K round of 16 on hard. The upset overturned the form book — Mathilde Johansson came in leading the head-to-head 1–0, but Larissa Carvalho had been the form player, winning 3 of their last 4 on hard. Larissa Carvalho claimed a first win over Mathilde Johansson in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-10-30 | Mexico City 25K | F | hard | Mathilde Johansson | 6-1 7-6(7) |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.