Pablo Bianchi defeated Leonardo Olguin 6-3 4-6 6-4 in the Argentina 1 round of 16 on clay. The upset overturned the form book — Leonardo Olguin came in leading the head-to-head 3–2. Pablo Bianchi narrowed the head-to-head to 3–3.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2001-03-12 | Argentina F1 | QF | clay | Pablo Bianchi | 6-3 6-4 |
| 2000-06-12 | Argentina 3 | R32 | clay | Pablo Bianchi | 4-6 6-3 6-0 |
| 1998-08-15 | Slovak Republic Masters 1 | R16 | clay | Leonardo Olguin | 3-6 7-5 6-1 |
| 1998-07-20 | France F3 | R32 | clay | Leonardo Olguin | 7-5 3-6 6-2 |
| 1997-10-04 | Argentina 2 Masters 1 | SF | clay | Leonardo Olguin | 4-6 6-0 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.