Laura Pena defeated Nuria Llagostera Vives 6-1 6-0 in the Mallorca 10K round of 32 on clay. The upset overturned the form book — Nuria Llagostera Vives came in leading the head-to-head 2–1, but Laura Pena had been the form player, winning 2 of their last 4 on clay. Laura Pena narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-10-04 | Girona 10K | F | clay | Nuria Llagostera Vives | 6-2 6-3 |
| 1999-05-17 | Zaragoza 10K | QF | clay | Nuria Llagostera Vives | 7-6 6-2 |
| 1999-05-10 | Tortosa 10K | R32 | clay | Laura Pena | 6-4 6-0 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.