Stadium: Indoor B2 Round: 62 Ground: Hardcourt outdoor
| ITF M15 - Shanghai | 2023/07/09 02:00 | Ying-Ze Chen v Wai Yu Kai | 2-6,4-6 |
| ITF M15 - Tianjin | 2023/07/03 01:00 | Wai Yu Kai v Natthasith Kunsuwan | 2-6,2-6 |
| ITF M15 - Tianjin | 2023/07/02 02:00 | Wai Yu Kai v Jianhao Sheng | 6-4,6-4 |
| ITF M15 - Tianjin | 2023/06/12 03:45 | Yanjie Zheng v Wai Yu Kai | 7-6,4-6,10-1 |
| ITF M15 - Tianjin | 2023/06/11 01:00 | Shaoyun Liu v Wai Yu Kai | 0-2 |
| Davis Cup | 2020/03/07 14:45 | Maks Kasnikowski v Wai Yu Kai | 1-6,6-2,10-3 |
| ITF - M15 - Monastir | 2020/02/25 10:15 | Nino Ehrenschneider v Wai Yu Kai | 6-4,6-1 |
| ITF - M15 - Monastir | 2020/02/18 09:00 | Wai Yu Kai v Quentin Folliot | 1-6,1-6 |
| ITF M15 - Shanghai | 2023/07/09 02:00 | Yutong Su v James Elia | 1-6,7-6,10-8 |
| ITF M15 - Tianjin | 2023/07/03 01:00 | Yutong Su v Mattias Southcombe | 4-6,1-6 |
| ITF M25 - Jakarta | 2023/04/17 04:30 | Tegar A S Wibowo v Yutong Su | 6-3,6-3 |
| ITF M25 - Cairns | 2022/10/02 00:00 | Yutong Su v Hugh Callaghan | 6-7,6-7 |