| WTT Feeder Gaia | 2023/11/23 19:50 | Angel Naranjo v Niu, Guankai | W | 2-3 |
| WTT Feeder Gaia | 2023/11/23 12:05 | Niu, Guankai v Tamas Lakatos | W | 3-0 |
| WTT Feeder Otocec | 2023/11/02 15:00 | Niu, Guankai v Adam Szudi | L | 2-3 |
| WTT Feeder Panagyurishte | 2023/08/31 16:25 | Kai Zhou v Niu, Guankai | L | 3-2 |
| WTT Feeder Olomouc | 2023/08/25 10:20 | Anders Lind v Niu, Guankai | L | 3-0 |
| WTT Feeder Olomouc | 2023/08/24 14:35 | Niu, Guankai v Iulian Chirita | W | 3-0 |
| WTT - Feeder Havirov | 2023/07/28 16:10 | Niu, Guankai v Zeng, Beixun | L | 1-3 |
| WTT Feeder Dusseldorf II | 2023/02/24 10:10 | Niu, Guankai v Yuta Tanaka | L | 1-3 |
| WTT Feeder Gaia | 2023/11/23 19:45 | Rares Sipos v Cheng-Jui Kao | W | 0-3 |
| WTT Feeder Gaia | 2023/11/23 13:30 | Baldwin Chan v Cheng-Jui Kao | W | 2-3 |
| WTT Contender Taiyuan | 2023/11/11 03:00 | Shidong Lin v Cheng-Jui Kao | L | 3-1 |
| WTT Contender Taiyuan | 2023/11/10 05:45 | Yang Wang v Cheng-Jui Kao | W | 1-3 |
| WTT Contender Taiyuan | 2023/11/09 05:05 | Cheng-Jui Kao v Sangsu Lee | W | 3-1 |
| WTT Champions Frankfurt | 2023/10/29 12:35 | Cheng-Jui Kao v Chuqin Wang | L | 0-3 |
| WTT Contender Antalya | 2023/10/20 15:00 | Hugo Calderano v Cheng-Jui Kao | L | 3-0 |
| WTT Contender Antalya | 2023/10/20 14:15 | Hugo Calderano v Cheng-Jui Kao | L | 3-0 |