Mariano Puerta defeated Juan Ignacio Chela 6-3 2-6 6-3 in the Santiago round of 16 on clay. The upset overturned the form book — Juan Ignacio Chela came in leading the head-to-head 2–0. Mariano Puerta 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 |
|---|---|---|---|---|---|
| 2003-07-14 | Amersfoort | R32 | clay | Juan Ignacio Chela | 6-3 6-1 |
| 2000-02-21 | Mexico City | F | clay | Juan Ignacio Chela | 6-4 7-6(4) |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (161 vs 200). ATP, WTA & Challenger.