Matias Oneille defeated Bo Ram Cha 6-2 1-6 6-3 in the Argentina F1 round of 32 on clay. The upset overturned the form book — Bo Ram Cha came in leading the head-to-head 1–0. Matias Oneille claimed a first win over Bo Ram Cha in two meetings, levelling the head-to-head at 1–1.
Oneille M. came through in three sets.
Matias Oneille beat Bo Ram Cha 6-2 1-6 6-3. Umpiry, "Matias Oneille vs Bo Ram Cha — Argentina F1 Round of 32", https://umpiry.com/match/2006-03-13/cha-vs-oneille-argentina-f1-r32?utm_source=cite (as of 13 March 2006).