Stadium: Eden 10 Round: 62 Ground: Clay
| ITF M15 Rovinj | 2021/03/15 11:30 | Sebastian Prechtel v Milan Welte | 6-1,4-6,1-10 |
| ITF M15 Rovinj | 2021/03/14 08:30 | Milan Welte v Tommaso Compagnucci | 6-3,6-1 |
| German Championship | 2020/12/08 15:00 | Milan Welte v Michael Weindl | 0-0 |
| ITF M15 Sarreguemines | 2020/10/26 11:25 | Leopold Zima v Milan Welte | 7-6,6-4 |
| ITF M15 Sarreguemines | 2020/10/25 10:30 | Patrik Hartmeier v Milan Welte | 6-2,6-7,5-10 |
| Challenger Ismaning | 2020/10/17 09:00 | Tomas Martin Etcheverry v Milan Welte | 5-7,7-6,6-1 |
| ITF M15 Forbach | 2020/09/28 07:00 | Milan Welte v Samuel Brosset | 3-6,2-6 |
| ATP Hamburg | 2020/09/19 08:30 | Milan Welte v Jiri Vesely | 4-6,4-6 |
| ITF M15 Rovinj | 2021/03/15 11:00 | Josip Krstanovic v Federico Arnaboldi | 1-6,2-6 |
| ITF M15 Rovinj | 2021/03/14 08:30 | Mate Voros v Federico Arnaboldi | 1-6,1-6 |
| ITF M15 Porec | 2021/03/10 12:40 | Antoine Cornut-Chauvinc v Federico Arnaboldi | 6-7,6-3,6-2 |
| ITF M15 Porec | 2021/03/09 10:40 | Federico Arnaboldi v Giacomo Dambrosi | 6-3,6-1 |
| ITF M15 Porec | 2021/03/08 13:00 | Federico Arnaboldi v Vladimir Filip | 6-3,6-2 |
| ITF M15 Porec | 2021/03/07 12:00 | Federico Arnaboldi v Yvo Panak | 6-0,0-6,10-6 |
| ITF M15 Antalya | 2021/02/16 07:00 | Pietro Rondoni v Federico Arnaboldi | 6-4,6-3 |
| ITF M15 Antalya | 2021/02/14 12:00 | Daniel Rincon v Federico Arnaboldi | 3-6,3-6 |