Stadium: Court 2 Round: 25 Ground: Clay
| ITF M25 Meerbusch | 2021/04/13 13:30 | Mats Rosenkranz v Milan Welte | 2-6,2-6 |
| ITF M25 Meerbusch | 2021/04/12 11:00 | Hendrik Jebens v Milan Welte | 5-7,1-6 |
| ITF M25 Meerbusch | 2021/04/11 13:30 | Jannik Rother v Milan Welte | 2-6,2-6 |
| ITF M25 Biel | 2021/03/29 13:35 | Milan Welte v Jakub Paul | 4-6,1-6 |
| ITF M15 Rovinj | 2021/03/16 09:00 | Milan Welte v Federico Arnaboldi | 2-6,2-6 |
| 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 M25 Meerbusch | 2021/04/13 11:00 | Pietro Rondoni v Yvo Panak | 6-7,6-3,10-2 |
| ITF M25 Meerbusch | 2021/04/12 11:30 | Pietro Rondoni v Maximilian Dietel | 6-2,6-3 |
| ITF M25 Meerbusch | 2021/04/11 14:00 | Pietro Rondoni v Sascha Moeller | 6-2,6-1 |
| ITF M15 Opatija | 2021/03/26 11:10 | Giovanni Fonio v Pietro Rondoni | 6-3,6-3 |
| ITF M15 Opatija | 2021/03/25 12:15 | Pietro Rondoni v Timo Legout | 6-1,3-6,6-2 |
| ITF M15 Opatija | 2021/03/24 11:20 | Ignacio Monzon v Pietro Rondoni | 2-6,3-6 |
| ITF M15 Rovinj | 2021/03/18 10:30 | David Pichler v Pietro Rondoni | 6-4,6-2 |
| ITF M15 Rovinj | 2021/03/17 10:00 | Pietro Rondoni v Admir Kalender | 7-5,6-4 |