| Date | 28 July 2021 | |
|---|---|---|
| Location | Ariake Tennis Forest Park, Ariake, Koto, Tokyo, Japan | |
| Chair Umpire | Timo Janzen |  GER |
| Competitor | NOC | Sets Won | Set #1 | Set #2 | Set #3 | |
|---|---|---|---|---|---|---|
| Karen Khachanov |  ROC | 2 | 6 | 2 | 6 | |
| Diego Schwartzman |  ARG | 1 | 1 | 6 | 1 |
| Karen Khachanov | Diego Schwartzman | |
|---|---|---|
| Sets Won | 2 | 1 |
| Set #1 | 6 | 1 |
| Set #2 | 2 | 6 |
| Set #3 | 6 | 1 |
