Juan Martin del Potro defeated Nicolas Almagro 7-6 7-6 in the Tokyo semi-final on hard. The result followed the form book — Juan Martin del Potro came in leading the head-to-head 3–0. Juan Martin del Potro extended the head-to-head to 4–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2017-05-29 | Roland Garros | R64 | clay | Juan Martin del Potro | 6-3 3-6 1-1 RET |
| 2016-10-17 | Stockholm | R16 | hard | Juan Martin del Potro | 6-4 6-3 |
| 2013-10-07 | Shanghai Masters | QF | hard | Juan Martin del Potro | 6-3 6-3 |
Averages from each player's recent completed matches (20 vs 20). ATP, WTA & Challenger.