| German Championship | 2020/12/08 09:30 | Flemming Peters v Thomas Jan Dafcik | 6-3,5-7,3-6 |
| ITF Austria F5 Qual | 2016/08/08 08:00 | Kirill Kivattsev v Thomas Jan Dafcik | 6-3,2-6,6-1 |
| ITF Austria F5 Qual | 2016/08/07 08:30 | Thomas Jan Dafcik v Alexander Thomas Grabher | 6-4,6-0 |
| ITF Austria F5 Qual | 2016/08/06 08:30 | Andreas Kramer v Thomas Jan Dafcik | 3-6,1-6 |
| ITF Germany F11 | 2014/08/03 07:30 | Thomas Jan Dafcik v Adriano Quinti | 6-1,7-6 |
| ITF Austria F4 Qual | 2014/07/12 08:00 | Jacob Nicolussi v Thomas Jan Dafcik | 3-6,6-3,6-2 |
| ITF M15 Sarreguemines | 2020/10/25 14:05 | Niklas Schell v Kenneth Raisma | 6-7,6-7 |
| ITF M15 Forbach | 2020/09/28 15:45 | Kai Lemstra v Niklas Schell | 6-4,7-6 |
| ITF M15 Forbach | 2020/09/28 11:30 | Julien De Cuyper v Niklas Schell | 4-6,1-6 |
| ITF M15 Kolkata | 2020/03/12 04:00 | Niklas Schell v Nitin Kumar Sinha | 6-3,3-6,0-6 |
| ITF M15 Kolkata | 2020/03/11 04:00 | Dennis Uspensky v Niklas Schell | 3-6,0-6 |
| ITF M15 Sharm El Sheikh | 2020/02/10 10:00 | Arvid Nordquist v Niklas Schell | 6-2,6-3 |
| ITF M15 Sharm El Sheikh | 2020/02/09 12:00 | Anthony Turchi v Niklas Schell | 3-6,5-7 |
| ITF M15 Sharm El Sheikh | 2020/02/05 12:25 | Aleksei Khomich v Niklas Schell | 6-2,4-6,6-2 |