Ivan Ljubicic defeated Juan Martin del Potro 4-6 6-1 6-4 in the Monte Carlo Masters round of 32 on clay. The upset overturned the form book — Juan Martin del Potro came in leading the head-to-head 1–0. Ivan Ljubicic claimed a first win over Juan Martin del Potro in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-03-10 | Indian Wells Masters | R64 | hard | Juan Martin del Potro | 5-7 6-4 6-2 |
Averages from each player's recent completed matches (20 vs 20). ATP, WTA & Challenger.