| Date | — | |
|---|---|---|
| Location | Ariake Tennis Forest Park, Ariake, Koto, Tokyo, Japan | |
| Chair Umpire | James Keothavong |  GBR |
| Seed | Competitor | NOC | Sets Won | Sets Won | Set 1 | Set 2 | Set 3 | |
|---|---|---|---|---|---|---|---|---|
| – | Stefanos Tsitsipas |  GRE | 2 | 2 | 6 | 3 | 6 | |
| – | Philipp Kohlschreiber |  GER | 1 | 1 | 3 | 6 | 3 |
| Stefanos Tsitsipas | Philipp Kohlschreiber | |
|---|---|---|
| Sets Won | 2 | 1 |
| Set 1 | 6 | 3 |
| Set 2 | 3 | 6 |
| Set 3 | 6 | 3 |
