Mauricio Doria Medina defeated Ricardo Siggia 3-6 7-5 7-5 in the Peru F3 round of 16 on clay. The upset overturned the form book — Ricardo Siggia came in leading the head-to-head 2–0, but Mauricio Doria Medina had been the form player, winning 2 of their last 7 on clay. Mauricio Doria Medina claimed a first win over Ricardo Siggia in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-05-18 | Brazil F3 | R32 | clay | Ricardo Siggia | 7-6(4) 6-2 |
| 2009-05-11 | Brazil F2 | QF | hard | Ricardo Siggia | 6-3 6-1 |