Stadium: Court 3 Round: 54 Ground: Hardcourt indoor
| 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 |
| ITF M15 Allershausen | 2021/09/01 12:05 | Milan Welte v Niklas Schell | 6-3,2-6,3-6 |
| ITF M25 Trier | 2021/08/24 11:00 | Milan Welte v Tim Handel | 6-2,1-6,6-7 |
| ITF M25 Ueberlingen | 2021/08/19 10:35 | Louis Wessels v Milan Welte | 6-4,6-3 |
| ITF M25 Ueberlingen | 2021/08/18 14:10 | Milan Welte v Constantin Bittoun Kouzmine | 6-4,6-0 |
| ITF M25 Frankfurt am Main | 2021/08/09 14:10 | Milan Welte v Taiyo Yamanaka | 6-7,4-6 |