Sheila Guerberg defeated Hilda Zuleta Cabrera 6-3 6-4 in the Caracas 10K round of 32 on hard. The upset overturned the form book — Hilda Zuleta Cabrera came in leading the head-to-head 3–1, but Sheila Guerberg had been the form player, winning 2 of their last 4 on hard. Sheila Guerberg narrowed the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-07-10 | Caracas 10K | R16 | hard | Sheila Guerberg | 7-5 6-2 |
| 2006-07-03 | Valencia 10K | QF | hard | Hilda Zuleta Cabrera | 6-4 6-1 |
| 2003-10-06 | San Salvador 10K | QF | clay | Hilda Zuleta Cabrera | 6-4 4-6 7-5 |
| 2003-07-21 | Puerto Ordaz 10K | R16 | hard | Hilda Zuleta Cabrera | 6-4 6-4 |