Madrid 
Rolan Garros 
W100 Oeiras 
Concepcion 1 
Ostrava 
Cagliari 
Savannah 
Davis Сup Group I Tennis. Played Sekiguchi Shuichi. Season 2023
Country 
Japan. Ranking ATP 635.
Japan. Ranking ATP 635. Zhangjiagang Challenger | ||||
|---|---|---|---|---|
| 28.08.2023 | Qialification final | Sekiguchi Shuichi — Cui Jie | 0:2 (1:6, 2:6) |
|
| Zhuhai Challenger | ||||
| 22.08.2023 | First round | Palan Dominik — Sekiguchi Shuichi | 2:1 (7:6, 5:7, 6:2) |
|
 Nur-Sultan 1 | ||||
| 24.07.2023 | First round | Sultanov Khumoun — Sekiguchi Shuichi | 2:0 (7:6, 6:4) |
|
 Burnie | ||||
| 01.02.2023 | Second round | Walton Adam — Sekiguchi Shuichi | 2:0 (6:3, 6:2) |
|
| 30.01.2023 | First round | Sekiguchi Shuichi — Sweeny Dane | 2:0 (6:2, 6:4) |
|