| WTT Singapore Smash Quals | 2023/03/09 04:20 | Kay Stumper v Panagiotis Gionis | L | 3-2 |
| WTT Contender Doha - kval | 2024/01/15 13:20 | Manush Utpalbhai Shah v Panagiotis Gionis | W | 2-3 |
| WTT Contender Doha - kval | 2024/01/14 14:15 | Nima Alamian v Panagiotis Gionis | W | 0-3 |
| WTT Feeder Biella | 2023/12/17 16:45 | Benedikt Duda v Panagiotis Gionis | L | 3-2 |
| WTT Feeder Biella | 2023/12/17 10:30 | Chih Yuan Chuang v Panagiotis Gionis | W | 0-3 |
| WTT Feeder Biella | 2023/12/16 16:50 | Noshad Alamiyan v Panagiotis Gionis | W | 1-3 |
| WTT Feeder Biella | 2023/12/15 19:10 | Panagiotis Gionis v Sharath Kamal Achanta | W | 3-1 |
| WTT Feeder Biella | 2023/12/15 14:00 | Niagol Stoyanov v Panagiotis Gionis | W | 2-3 |
| WTT Feeder Biella | 2023/12/14 19:45 | Angel Naranjo v Panagiotis Gionis | W | 0-3 |
| WTT Contender Doha - kval | 2024/01/15 12:40 | Kay Stumper v Daniel Habesohn | W | 3-1 |
| WTT Contender Doha - kval | 2024/01/14 13:25 | Kay Stumper v Jeet Chandra | W | 3-1 |
| Meistrite liiga | 2023/12/15 18:55 | Kay Stumper v Diogo Carvalho | W | 3-1 |
| Meistrite liiga | 2023/11/19 17:05 | Andreas Levenko v Kay Stumper | W | 1-3 |
| WTT Feeder Otocec | 2023/11/02 15:00 | Kay Stumper v Jiri Martinko | L | 1-3 |
| WTT Contender Antalya - kval | 2023/10/18 14:10 | Kay Stumper v Eduard Ionescu | L | 1-3 |
| WTT Contender Antalya Quals 2023 | 2023/10/17 13:20 | Marcelo Aguirre v Kay Stumper | W | 2-3 |
| WTT Feeder Stockholm | 2023/10/05 10:10 | Kay Stumper v Kirill Gerassimenko | L | 2-3 |