| ITF M15 Allershausen | 2021/08/31 10:00 | Thomas Jan Dafcik v Luke Johnson | 5-7,0-6 |
| ITF M25 Trimbach | 2021/03/08 12:15 | Arthur Bouquier v Thomas Jan Dafcik | 6-3,6-2 |
| German Championship | 2020/12/09 14:00 | Thomas Jan Dafcik v Niklas Schell | 3-6,4-6 |
| 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 M25 Villers Les Nancy | 2021/11/09 12:05 | Antoine Monaco v Milan Welte | 6-1,6-7,6-2 |
| ITF M25 Sarreguemines | 2021/10/27 14:00 | Calvin Hemery v Milan Welte | 6-4,6-2 |
| ITF M25 Hamburg | 2021/10/19 11:25 | Henri Squire v Milan Welte | 6-2,6-2 |
| ITF M25 Hamburg | 2021/10/17 13:15 | Milan Welte v Ben Jones | 6-4,6-4 |
| ITF M25 Hamburg | 2021/10/17 10:10 | Milan Welte v Sean Marcel Saal | 6-1,6-2 |
| ITF M15 Forbach | 2021/09/29 13:00 | Arthur Reymond v Milan Welte | 6-1,6-7,6-4 |
| ITF M25 Pardubice | 2021/09/23 09:00 | Robin Stanek v Milan Welte | 6-2,6-4 |
| ITF M25 Pardubice | 2021/09/21 11:55 | Milan Welte v Pawel Juszczak | 6-4,6-3 |