| Date | 28 July 2021 | |
|---|---|---|
| Location | Ariake Tennis Forest Park, Ariake, Koto, Tokyo, Japan | |
| Chair Umpire | Emmanuel Joseph |  FRA |
| Seed | Competitor | NOC | Sets Won | Sets Won | Set 1 | Set 2 | |
|---|---|---|---|---|---|---|---|
| – | Pablo Carreño Busta |  ESP | 2 | 2 | 7 | 6 | |
| – | Dominik Koepfer |  GER | 0 | 0 | 6 | 3 |
| Pablo Carreño Busta | Dominik Koepfer | |
|---|---|---|
| Sets Won | 2 | 0 |
| Set 1 | 7 | 6 |
| Set 2 | 6 | 3 |
| Tie-break 1 | 9 | 7 |
