Mauricio Doria Medina defeated Steffen Zornosa 6-4 6-2 in the Bolivia F4 round of 16 on clay. The upset overturned the form book — Steffen Zornosa came in leading the head-to-head 1–0. Mauricio Doria Medina claimed a first win over Steffen Zornosa in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-09-20 | Bolivia F2 | R32 | clay | Steffen Zornosa | 5-7 6-3 7-6(6) |