| WTT Contender Tunis | 2021/10/28 14:30 | Kay Stumper v Ovidiu Ionescu | L | 0-3 |
| WTT Contender Tunis | 2021/10/27 14:00 | Yang Wang v Kay Stumper | W | 2-3 |
| Champions League | 2021/09/17 18:15 | Jiri Martinko v Kay Stumper | W | 1-3 |
| Champions League | 2021/09/16 12:30 | Thiago Monteiro v Kay Stumper | W | 0-3 |
| Champions League | 2021/09/15 13:05 | Kay Stumper v Zsolt Peto | W | 3-0 |
| Dusseldorf Masters | 2020/08/14 15:20 | Steffen Mengel v Kay Stumper | L | 4-0 |
| Dusseldorf Masters | 2020/06/08 10:00 | Steffen Mengel v Kay Stumper | L | 3-0 |
| North American Open | 2019/12/07 18:10 | Licen Yuan v Zhaoyan Zhao | L | 2-4 |
| North American Open | 2019/12/06 19:20 | Emmanuel Lebesson v Licen Yuan | W | 2-4 |
| North American Open | 2019/12/05 21:00 | Licen Yuan v Irvin Bertrand | L | 3-4 |
| Belarus Open | 2019/11/02 17:00 | Licen Yuan v Yingbin Xu | L | 0-4 |
| Belarus Open | 2019/11/02 10:50 | Maxim Chaplygin v Licen Yuan | W | 3-4 |
| Belarus Open | 2019/11/01 15:10 | Licen Yuan v Yuto Kizukuri | W | 4-2 |
| Belarus Open | 2019/11/01 08:35 | Nandor Ecseki v Licen Yuan | W | 2-4 |