Stadium: Court 1 Round: 62 Ground: Hardcourt outdoor
| ITF M15 Sharm El Sheikh | 2021/02/07 09:30 | Ken Onishi v Taisei Ichikawa | 3-6,6-2,12-10 |
| ITF M15 Sharm El Sheikh | 2021/01/31 10:30 | Issei Okamura v Taisei Ichikawa | 7-6,3-6,10-7 |
| ITF M15 Cairo | 2021/01/26 08:00 | Taisei Ichikawa v Keisuke Saitoh | 2-6,5-7 |
| ITF M15 Cairo | 2021/01/25 10:30 | Taisei Ichikawa v Mohamed Hesham | 6-0,6-0 |
| ITF M15 Cairo | 2021/01/24 09:30 | Taisei Ichikawa v Maik Steiner | 6-4,6-4 |
| ITF M15 Cairo | 2021/01/17 08:00 | Rimpei Kawakami v Taisei Ichikawa | 2-6,6-2,10-6 |
| ITF M15 Cairo | 2021/01/11 09:00 | Dhruv Sunish v Taisei Ichikawa | 5-7,6-4,10-5 |
| ITF M15 Nonthaburi | 2019/11/26 07:20 | Taisei Ichikawa v Ji Sung Nam | 5-7,2-6 |
| ITF M15 Monastir | 2021/05/02 12:00 | Andrea Picchione v Niklas Waldner | 6-2,6-4 |
| ITF M15 Monastir | 2021/04/25 11:30 | Niklas Waldner v Iiro Vasa | 1-6,4-6 |
| ITF M15 Anif | 2020/08/23 07:00 | Davide Galoppini v Niklas Waldner | 6-3,6-4 |
| ITF M25 Vogau | 2020/08/17 11:30 | Niklas Waldner v Alexander Shevchenko | 4-6,2-6 |
| ITF M25 Vogau | 2020/08/17 07:30 | Dean Thurner v Niklas Waldner | 4-6,6-2,5-10 |
| Austrian Tennis Championship | 2020/07/28 12:00 | Lucas Miedler v Niklas Waldner | 6-3,6-2 |
| Austrian Tennis Championship | 2020/07/27 10:00 | David Pichler v Niklas Waldner | 6-0,6-0 |
| Austrian OTV Series | 2020/07/15 09:30 | Sandro Kopp v Niklas Waldner | 6-1,6-0 |