Bo Ram Cha defeated Matias Oneille 6-4 6-2 in the Chile F1 round of 32 on clay. The upset overturned the form book — Matias Oneille came in leading the head-to-head 1–0. Bo Ram Cha claimed a first win over Matias Oneille in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-03-13 | Argentina F1 | R32 | clay | Matias Oneille | 6-2 1-6 6-3 |