| Austrian Open Qual | 05/23 13:05 | - | Niederhuber, Kai v Eogene Ewe | L | 0-2 | |
| Austrian Open Qual | 05/23 09:05 | - | 린델로핀, 토니 v Niederhuber, Kai | W | 0-2 | |
| Slovenia Open Quals | 05/16 12:20 | - | Yadav, Ansal v Niederhuber, Kai | L | 2-1 | |
| Slovenia Open Quals | 05/16 11:40 | - | Niederhuber, Kai v C.S Koushiik | W | 2-0 | |
| Slovenia Open Quals | 05/15 14:50 | - | Christian Tomic v Niederhuber, Kai | W | 0-2 | |
| Portugal Int. Qual | 03/06 15:40 | - | Niederhuber, Kai v Garret Tan | L | 1-2 | |
| Hungarian Int. Qual | 11/01 15:20 | - | 바로니, 엔리코 v Niederhuber, Kai | L | 2-0 | |
| Hungarian Int. Qual | 11/01 10:55 | - | Pavel Manasek v Niederhuber, Kai | W | 0-2 | |
| Czech Open Qual | 10/19 16:45 | - | Kim Linell v Niederhuber, Kai | L | 2-1 | |
| Croatian Int. | 09/29 09:55 | - | Simon Baron-Vezilier v Niederhuber, Kai | L | 2-0 | |
| Croatia Int. Qual | 09/28 18:30 | - | Felix Wright v Niederhuber, Kai | W | 0-2 | |
| Croatia Int. Qual | 09/28 15:10 | - | 하지할릴로비치, 에드빈 v Niederhuber, Kai | W | 0-2 | |
| Croatia Int. Qual | 09/28 12:15 | - | Sebastian Kadlec v Niederhuber, Kai | W | 0-2 | |
| Polish Int. Qual | 09/21 10:20 | - | Niederhuber, Kai v Ashok Kumar, Arun Kumar | W | 2-0 | |
| Polish Int. | 09/21 10:00 | - | Niederhuber, Kai v 소넨슈인, 아론 | L | 1-2 | |
| Polish Int. Qual | 09/21 07:40 | - | Niederhuber, Kai v Maksymilian Krogulski | W | 2-0 | |
| Slovenia Future Series | 09/08 08:45 | - | 브루운, 제프 v Niederhuber, Kai | L | 2-1 | |
| Bonn Int. Qual | 05/31 09:10 | - | Niederhuber, Kai v Kim Kristensen, D. | L | 0-2 | |
| Austrian Open Qual | 05/25 09:55 | - | Niederhuber, Kai v Jia Jie Tan | L | 0-2 | |
| Slovenia Open Quals | 05/17 16:45 | - | Niederhuber, Kai v Yaro Van Delsen | L | 1-2 | |
| Slovenia Open Quals | 05/17 09:10 | - | Niederhuber, Kai v Adarsh Palani Kumar | W | 2-0 | |
| Luxembourg Open Qual | 05/04 12:50 | - | Niederhuber, Kai v 카르발호, 브루노 | L | 0-2 | |
| Luxembourg Open Qual | 05/04 10:30 | - | Ramnish Kumar v Niederhuber, Kai | W | 0-2 | |
| Polish Open Qual | 03/22 16:00 | - | 킥리츠, 마티아스 v Niederhuber, Kai | L | 2-0 | |
| Polish Open Qual | 03/22 08:00 | - | Daniel Dvorak v Niederhuber, Kai | W | 0-2 | |
| Slovenia Future Series Qual | 11/24 12:40 | - | Niederhuber, Kai v Paul Tournefier | L | 0-2 | |
| Hungarian Int. | 11/03 13:20 | - | Lin, C.-Y. v Niederhuber, Kai | L | 2-0 | |
| Hungarian Int. Qual | 11/03 08:35 | - | Sebastian Lassen Nielsen v Niederhuber, Kai | W | 0-2 | |
| Hungarian Int. Qual | 11/02 19:05 | - | Niederhuber, Kai v 콘드라티우크, 니콜라이 | W | 2-0 | |
| Hungarian Int. Qual | 11/02 14:25 | - | 카르발호, 브루노 v Niederhuber, Kai | W | 0-2 |