| 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 |
| WTT Contender - Antalya | 2023/10/19 11:50 | Filip Zeljko v Cheng-Jui Kao | W | 2-3 |
| WTT - Star Contender Lanzhou | 2023/10/05 11:40 | Jinbao Ma v Cheng-Jui Kao | L | 3-2 |
| WTT Feeder - Panagyurishte | 2023/09/01 10:30 | Kay Stumper v Cheng-Jui Kao | L | 3-2 |
| WTT Feeder - Panagyurishte | 2023/08/31 17:35 | Andrea Puppo v Cheng-Jui Kao | W | 1-3 |
| WTT Feeder - Olomouc | 2023/08/25 09:45 | Zheng Sun v Cheng-Jui Kao | L | 3-1 |
| WTT Champions Frankfurt | 2023/11/03 18:30 | Sangsu Lee v Felix Lebrun | L | 2-3 |
| WTT Champions Frankfurt | 2023/11/01 15:30 | Zhendong Fan v Sangsu Lee | W | 1-3 |
| WTT Champions Frankfurt | 2023/10/29 13:25 | Sangsu Lee v Timo Boll | W | 3-1 |
| WTT Contender Muscat | 2023/10/11 07:15 | Sangsu Lee v Hiroto Shinozuka | L | 0-3 |
| WTT - Star Contender Lanzhou | 2023/10/05 09:40 | Sangsu Lee v Yanning Liang | L | 2-3 |
| WTT Contender - Almaty | 2023/08/31 05:10 | Sangsu Lee v Mizuki Oikawa | L | 0-3 |
| WTT Contender - Rio | 2023/08/11 14:55 | Sora Matsushima v Sangsu Lee | L | 3-1 |
| WTT Contender - Rio | 2023/08/10 17:25 | Jonathan Groth v Sangsu Lee | W | 1-3 |