Stadium: Court 3 Round: 25 Ground: Clay
| ITF M25 Marburg | 2021/07/08 11:25 | Jonathan Mridha v Marvin Netuschil | 6-4,7-6 |
| ITF M25 Marburg | 2021/07/07 11:50 | Marvin Netuschil v Alejandro Gonzalez | 6-7,6-4,6-1 |
| ITF M25 The Hague | 2021/06/27 08:00 | Marvin Netuschil v Alec Deckers | 6-4,6-2 |
| ITF M15 Bergamo | 2021/06/25 10:00 | Federico Arnaboldi v Marvin Netuschil | 7-6,6-4 |
| ITF M15 Bergamo | 2021/06/24 08:00 | Marvin Netuschil v Daniele Capecchi | 6-1,6-0 |
| ITF M15 Bergamo | 2021/06/23 09:00 | Andrea Basso v Marvin Netuschil | 6-1,2-6,2-6 |
| ITF M15 Troisdorf | 2021/05/13 13:25 | Marvin Netuschil v Sebastian Fanselow | 2-6,1-6 |
| ITF M15 Troisdorf | 2021/05/12 13:30 | Marvin Netuschil v Amaury Raynel | 6-1,6-3 |
| ITF M15 Monastir | 2021/06/22 08:30 | Benjamin Winter Lopez v Mark Whitehouse | 7-6,6-3 |
| Challenger Nottingham Qual | 2021/06/13 12:00 | Zhizhen Zhang v Mark Whitehouse | 6-4,7-6 |
| ITF M15 Heraklion | 2021/06/01 10:30 | Mark Whitehouse v Daniel Little | 4-6,1-6 |
| ITF M15 Heraklion | 2021/05/25 08:00 | Mark Whitehouse v Petros Chrysochos | 5-7,4-6 |
| ITF M15 Heraklion | 2021/05/19 09:45 | Takuto Niki v Mark Whitehouse | 6-3,6-3 |
| ITF M15 Shymkent | 2021/04/14 07:00 | Mark Whitehouse v Dostanbek Tashbulatov | 4-6,4-6 |
| ITF M15 Shymkent | 2021/04/07 05:40 | Dostanbek Tashbulatov v Mark Whitehouse | 6-4,6-4 |
| UK Pro League | 2021/03/21 16:00 | Anton Matusevich v Mark Whitehouse | 6-2,6-7,10-6 |