Juan Martin del Potro defeated Juan Monaco 6-3 6-3 6-1 in the US Open round of 128 on hard. The upset overturned the form book — Juan Monaco came in leading the head-to-head 1–0, defending last year's round of 128. Juan Martin del Potro claimed a first win over Juan Monaco in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-02-20 | Costa Do Sauipe | R32 | hard | Juan Monaco | 7-5 7-5 |
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 (200 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About