Agustin Picco defeated Guillermo Bujniewicz 6-3 3-6 6-4 in the Argentina F17 qualifying round on clay. The upset overturned the form book — Guillermo Bujniewicz came in leading the head-to-head 1–0. Agustin Picco claimed a first win over Guillermo Bujniewicz in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-05-18 | Argentina F6 | R16 | clay | Guillermo Bujniewicz | 7-5 7-6(6) |