Mariano Delfino defeated Leonardo Olguin 6-4 6-4 in the Argentina F1 round of 32 on clay. The upset overturned the form book — Leonardo Olguin came in leading the head-to-head 1–0. Mariano Delfino claimed a first win over Leonardo Olguin in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2001-03-27 | Argentina F3 | SF | clay | Leonardo Olguin | 6-3 6-2 |
Averages over each player's completed matches in the selected window (1 vs 1). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. Small sample — read as indicative. About