 China: M25 Yinchuan - Singles - Main |
|---|
| 1/16-finals | Kai W. Y. | Mo Y. C. | 1:2 (6:3, 4:6, 0:6) | details | 16.08.2023 |
 World: Davis Cup - World Group II - Singles - Preliminary |
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| | Kasnikowski M. | Kai W. Y. | 2:1 (1:6, 6:2, 10:3) | details | 07.03.2020 |
 Tunisia: M15 Monastir 8 - Singles - Main |
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| 1/16-finals | Ehrenschneider N. | Kai W. Y. | 2:0 (6:4, 6:1) | details | 25.02.2020 |
| Tunisia: M15 Monastir 7 - Singles - Main |
|---|
| 1/16-finals | Kai W. Y. | Folliot Q. | 0:2 (1:6, 1:6) | details | 18.02.2020 |
| Tunisia: M15 Monastir 5 - Singles - Main |
|---|
| 1/16-finals | Dougaz A. | Kai W. Y. | 2:0 (6:4, 6:1) | details | 05.02.2020 |
| Tunisia: M15 Monastir 4 - Singles - Main |
|---|
| 1/16-finals | Baez S. | Kai W. Y. | 2:0 (6:2, 6:2) | details | 29.01.2020 |
| Tunisia: M15 Monastir 3 - Singles - Main |
|---|
| 1/16-finals | Bergs Z. | Kai W. Y. | 2:0 (6:4, 6:2) | details | 21.01.2020 |
 Hong Kong: M15 Hong Kong - Singles - Main |
|---|
| 1/16-finals | Yamasaki J. | Kai W. Y. | 2:0 (6:2, 6:1) | details | 08.01.2020 |
| World: Davis Cup - Group II - Singles - Main |
|---|
| | Kai W. Y. | Tseng C. H. | 0:2 (2:6, 5:7) | details | 15.09.2019 |
