Juan Martin del Potro defeated Damir Dzumhur 6-3 6-3 in the Madrid Masters round of 32 on clay. The result followed the form book — Juan Martin del Potro came in leading the head-to-head 2–0. Juan Martin del Potro extended the head-to-head to 3–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2018-07-30 | Los Cabos | SF | hard | Juan Martin del Potro | 6-3 7-6(6) |
| 2017-02-20 | Delray Beach | R16 | hard | Juan Martin del Potro | 7-6(5) 4-6 6-3 |
Averages from each player's recent completed matches (20 vs 20). ATP, WTA & Challenger.