| German Championship | 2021/12/08 09:00 | Thomas Jan Dafcik v Milan Welte | 2-6,3-6 |
| 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 - Hamborg | 2021/10/19 11:25 | Henri Squire v Milan Welte | 6-2,6-2 |
| ITF M25 - Hamborg | 2021/10/17 13:15 | Milan Welte v Ben Jones | 6-4,6-4 |
| ITF M25 - Hamborg | 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 |
| German Championship | 2021/12/08 09:00 | Tom Gentzsch v Luca Gelhardt | 4-6,1-6 |
| Tennis Point Exhibition Series | 2020/07/31 11:00 | Hazem Naw v Luca Gelhardt | 4-6,7-5,6-1 |
| Tennis Point Exhibition Series | 2020/07/30 10:30 | Luca Gelhardt v Benjamin Hassan | 5-7,4-6 |
| Tennis Point Exhibition Series | 2020/07/29 11:10 | Luca Gelhardt v Johannes Haerteis | 4-6,3-6 |
| Tennis Point Exhibition Series | 2020/07/28 08:00 | Constantin Schmitz v Luca Gelhardt | 6-3,6-1 |
| Tennis Point Exhibition Series | 2020/07/25 09:30 | Constantin Schmitz v Luca Gelhardt | 6-3,6-2 |
| Tennis Point Exhibition Series | 2020/07/24 09:30 | Christian Djonov v Luca Gelhardt | 0-6,6-7 |
| Tennis Point Exhibition Series | 2020/07/23 10:15 | Benjamin Hassan v Luca Gelhardt | 6-2,6-4 |