01/By surface
each with its own count, at equal weight
Hard
3-0
Potro J.M. leads 3-0 in 3 meetings on hard
Clay
Never on clay
no meeting on this surface
Grass
Never on grass
no meeting on this surface
02/Every meeting
3 rows, newest first
| Date | Tournament | Surface | Round | Winner | Score, winner first | Ranks, Potro J.M. first |
|---|---|---|---|---|---|---|
| Oct 20, 2016 | Stockholm OpenATP250 | hard | 2nd round | Del Potro J.M. | 6-4, 6-3 | 63 v 41 |
| Oct 11, 2013 | Shanghai MastersMasters 1000 | hard | quarterfinal | Del Potro J.M. | 6-3, 6-3 | 5 v 16 |
| Oct 5, 2013 | Rakuten Japan Open Tennis ChampionshipsATP500 | hard | semifinal | Del Potro J.M. | 7-6, 7-6 | 7 v 17 |
A record, never a share of meetings. Main-draw singles since 2013; a meeting ended by retirement is counted with the sets that were played and marked; a walkover is listed and counted in neither column. Del Potro J.M. and Almagro N. each carry the table against every opponent faced.