Leonardo Olguin defeated Juan Ignacio Chela 7-6 6-4 in the Argentina 1 Masters 1 round of 32 on clay. The upset overturned the form book — Juan Ignacio Chela came in leading the head-to-head 2–0, but Leonardo Olguin had been the form player, winning 3 of their last 5 on clay. Leonardo Olguin claimed a first win over Juan Ignacio Chela in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-10-26 | Argentina F5 | R32 | clay | Juan Ignacio Chela | 6-3 3-6 7-5 |
| 1997-09-06 | Bolivia Paraguay Masters 1 | QF | clay | Juan Ignacio Chela | 6-2 6-2 |
Averages over each player's completed matches in the selected window (1 vs 200). 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