| | Top level | Event type
Singles, Men – Match #5
| Date | 28 July 2021 | |
|---|---|---|
| Location | Ariake Tennis Forest Park, Ariake, Koto, Tokyo, Japan | |
| Chair Umpire | Timo Janzen |  GER |
| Seed | 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 |