Miguel Miranda defeated Leonardo Olguin 7-5 3-6 6-3 in the Argentina F4 qualifying round on clay. The upset overturned the form book — Leonardo Olguin came in leading the head-to-head 2–0. Miguel Miranda claimed a first win over Leonardo Olguin in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2000-04-17 | Chile F4 | R32 | clay | Leonardo Olguin | 3-6 6-4 6-3 |
| 1997-09-06 | Bolivia Paraguay Masters 1 | R16 | clay | Leonardo Olguin | 7-5 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.