Juan Pablo Guzman defeated Edgardo Massa 3-6 6-4 6-1 in the Argentina F4 round of 32 on clay. The upset overturned the form book — Edgardo Massa came in leading the head-to-head 2–0, but Juan Pablo Guzman had been the form player, winning 3 of their last 5 on clay. Juan Pablo Guzman claimed a first win over Edgardo Massa in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2000-06-12 | Argentina 2 | SF | clay | Edgardo Massa | 6-3 5-7 6-3 |
| 1999-07-31 | Argentina 2 Masters 2 | R16 | clay | Edgardo Massa | 6-0 1-6 7-5 |
Averages over each player's completed matches in the selected window (21 vs 24). 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. About