Juan Martin del Potro advanced when Jarkko Nieminen retired 6-2 4-2 in the Madrid Masters round of 32. Juan Martin del Potro extended the head-to-head to 4–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-04-14 | Monte Carlo Masters | R16 | clay | Jarkko Nieminen | 6-4 4-6 7-6(4) |
| 2013-02-11 | Rotterdam | QF | hard | Juan Martin del Potro | 6-3 6-4 |
| 2011-08-08 | Canada Masters | R64 | hard | Juan Martin del Potro | 6-4 6-0 |
| 2008-09-29 | Tokyo | R16 | hard | Juan Martin del Potro | 6-1 6-3 |
Averages from each player's recent completed matches (20 vs 20). ATP, WTA & Challenger.