| Ligue des Champions | 2023/12/08 19:50 | Alexander Gillen v Kaii Konishi | W | 0-3 |
| Ligue des Champions | 2023/12/08 19:50 | Alexander Gillen v Kaii Konishi | W | 0-3 |
| Ligue des Champions | 2023/11/24 18:45 | Frane Kojic v Kaii Konishi | L | 3-1 |
| Challenger Ochsenhausen | 2023/09/28 15:40 | Damian Wederlich v Kaii Konishi | W | 1-3 |
| Challenger Ochsenhausen | 2023/09/26 17:00 | Panagiotis Gionis v Kaii Konishi | L | 3-2 |
| Europe Cup | 2023/04/04 18:10 | Anders Lind v Kaii Konishi | W | 1-3 |
| Europe Cup | 2023/04/01 11:55 | Kaii Konishi v Ioannis Sgouropoulos | W | 3-0 |
| Challenger Ochsenhausen | 2023/03/03 17:40 | Szymon Malicki v Kaii Konishi | W | 0-3 |
| Europe Cup | 2023/02/22 17:40 | Panagiotis Gionis v Kaii Konishi | W | 1-3 |
| Ligue des Champions | 2023/12/08 19:50 | Alexander Gillen v Kaii Konishi | L | 0-3 |
| Ligue des Champions | 2023/11/26 14:00 | Ueda, Jin v Alexander Gillen | L | 3-0 |
| Europe Cup | 2023/10/22 17:40 | Alexander Gillen v Frane Kojic | L | 0-3 |
| Europe Cup | 2023/10/22 15:50 | Alexander Gillen v Ueda, Jin | L | 0-3 |
| WTT Feeder Stockholm Quals | 2023/10/02 09:00 | Alexander Gillen v Federico Otalvaro | L | 1-3 |
| WTT Feeder Olomouc Quals 2023 | 2023/08/22 15:15 | Alexander Gillen v Nemanja Dilas | L | 0-3 |
| Ligue des Champions | 2022/12/18 12:55 | Alexander Gillen v Andreas Levenko | L | 0-3 |
| ITTF European Team Championships, Singles | 2021/08/29 08:00 | Alexander Gillen v Tauber, Michael | L | 0-3 |