| WTT Star Contender Bangkok - Qual. | 2023/04/24 03:50 | Kay Stumper v Man Ho Kwan | W | 3-1 |
| WTT Star Contender Bangkok - Qual. | 2023/04/23 05:05 | Samuel Walker v Kay Stumper | W | 0-3 |
| Champions League | 2023/04/03 18:50 | Kay Stumper v Takuya Jin | W | 3-0 |
| Champions League | 2023/03/31 18:15 | Cedric Nuytinck v Kay Stumper | W | 0-3 |
| WTT Singapore Smash Quals | 2023/03/09 13:40 | Tomas Polansky v Kay Stumper | L | 3-2 |
| WTT Singapore Smash Quals | 2023/03/09 04:20 | Kay Stumper v Panagiotis Gionis | W | 3-2 |
| WTT Singapore Smash Quals | 2023/03/08 03:40 | Kay Stumper v Marcos Madrid | W | 3-0 |
| WTT Feeder Dusseldorf II | 2023/02/22 11:55 | Jiri Martinko v Kay Stumper | L | 3-0 |
| WTT Star Contender Bangkok - Qual. | 2023/04/24 03:40 | Cristian Pletea v Cheng-Jui Kao | W | 1-3 |
| WTT Star Contender Bangkok - Qual. | 2023/04/23 05:15 | Phakpoom Sanguansin v Cheng-Jui Kao | W | 1-3 |
| WTT Feeder Antalya | 2023/03/31 15:05 | Andreas Levenko v Cheng-Jui Kao | L | 3-0 |
| WTT Feeder Antalya | 2023/03/30 13:55 | Cheng-Jui Kao v Yew En Koen Pang | W | 3-2 |
| WTT Feeder Antalya | 2023/03/30 07:35 | Cheng-Jui Kao v Chih-Wei Yeh | W | 3-2 |
| WTT Feeder Antalya | 2023/03/29 09:20 | Cheng-Jui Kao v Kun Ting Beh | W | 3-0 |
| WTT Feeder Dusseldorf | 2023/02/15 16:15 | Cheng-Jui Kao v Alvaro Robles | L | 1-3 |
| WTT Feeder Dusseldorf | 2023/02/15 13:05 | Taiwo Mati v Cheng-Jui Kao | W | 0-3 |