Bo Ram Cha defeated Horacio Zeballos 6-3 6-3 in the Argentina F2 round of 16 on clay. The upset overturned the form book — Horacio Zeballos came in leading the head-to-head 1–0. Bo Ram Cha claimed a first win over Horacio Zeballos in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-05-02 | Argentina F4 | R32 | clay | Horacio Zeballos | 7-6(4) 5-7 7-5 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.