| Date | — | |
|---|---|---|
| Location | Ariake Tennis Forest Park, Ariake, Koto, Tokyo, Japan | |
| Chair Umpire | Manuel Absolu |  FRA |
| Competitor | NOC | Sets Won | Set 1 | Set 2 | Set 3 | |
|---|---|---|---|---|---|---|
| Marin Čilić |  CRO | 2 | 6 (5) | 7 | 7 (9) | |
| João Menezes |  BRA | 1 | 7 (7) | 5 | 6 (7) |
| Marin Čilić | João Menezes | |
|---|---|---|
| Sets Won | 2 | 1 |
| Set 1 | 6 (5) | 7 (7) |
| Set 2 | 7 | 5 |
| Set 3 | 7 (9) | 6 (7) |
