| WTT Feeder Dusseldorf II | 2023/02/22 11:55 | Jiri Martinko v Kay Stumper | L | 3-0 |
| Champions League | 2021/09/17 18:15 | Jiri Martinko v Kay Stumper | W | 1-3 |
| WTT Contender Antalya Quals | 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 |
| WTT Feeder Stockholm | 2023/10/04 11:20 | Kay Stumper v Flavien Coton | W | 3-2 |
| European Team Championships | 2023/09/17 16:10 | Kristian Karlsson v Kay Stumper | L | 3-2 |
| European Team Championships | 2023/09/16 14:40 | Joao Geraldo v Kay Stumper | W | 2-3 |
| WTT Feeder Panagyurishte | 2023/09/01 15:20 | Fanbo Meng v Kay Stumper | L | 3-2 |
| WTT Feeder Panagyurishte | 2023/09/01 10:30 | Kay Stumper v Cheng-Jui Kao | W | 3-2 |
| Champions League | 2023/10/25 17:25 | Anton Kallberg v Jiri Martinko | L | 3-0 |
| TT Star Series | 2023/10/14 13:54 | Jiri Martinko v Tomas Konecny | L | 1-3 |
| TT Star Series | 2023/10/14 10:15 | Jiri Martinko v Michal Bankosz | W | 3-1 |
| TT Star Series | 2023/10/14 08:15 | Jiri Martinko v Frantisek Onderka | W | 3-0 |
| TT Star Series | 2023/10/14 06:00 | Jiri Martinko v Antonin Gavlas | W | 3-1 |
| TT Star Series | 2023/10/13 12:15 | Jiri Martinko v Tomas Konecny | W | 3-1 |
| TT Star Series | 2023/10/13 08:15 | Jakub Zelinka v Jiri Martinko | W | 2-3 |
| TT Star Series | 2023/10/13 06:35 | Jiri Martinko v Andrei Baggaley | L | 2-3 |