Leonardo Olguin defeated Mariano Delfino 6-3 6-2 in the Argentina F3 semi-final on clay. The upset overturned the form book — Mariano Delfino came in leading the head-to-head 1–0, but Leonardo Olguin had been the form player, winning 5 of their last 8 on clay. Leonardo Olguin claimed a first win over Mariano Delfino in two meetings, levelling the head-to-head at 1–1.
Olguin L. took it in straight sets.
Leonardo Olguin beat Mariano Delfino 6-3 6-2. Umpiry, "Leonardo Olguin vs Mariano Delfino — Argentina F3 Semi-final", https://umpiry.com/match/2001-03-27/delfino-vs-olguin-argentina-f3-sf?utm_source=cite (as of 27 March 2001).