Stacia Fonseca defeated Yasmin Clarke 6-3 6-4 in the St Joseph MO 10K round of 16 on hard. The upset overturned the form book — Yasmin Clarke came in leading the head-to-head 1–0, but Stacia Fonseca had been the form player, winning 3 of their last 6 on hard. Stacia Fonseca claimed a first win over Yasmin Clarke in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-05-22 | El Paso TX 10K | SF | hard | Yasmin Clarke | 7-6(2) 6-1 |