Stadium: Court 1 Round: 14 Ground: Clay
| Challenger Salzburg | 2021/07/04 09:15 | Sadio Doumbia v Alexander Erler | 6-7,5-7 |
| Challenger Aix en Provence | 2021/06/14 08:30 | Sadio Doumbia v Oriol Roca Batalla | 1-6,4-6 |
| Challenger Aix en Provence | 2021/06/13 08:30 | Nick Chappell v Sadio Doumbia | 0-6,4-6 |
| Challenger Split | 2021/04/04 12:50 | Sadio Doumbia v Mirza Basic | 6-7,3-6 |
| Challenger - Gran Canaria | 2021/03/01 11:00 | Filip Cristian Jianu v Sadio Doumbia | 6-2,6-3 |
| Challenger - Gran Canaria - Kval | 2021/02/28 16:45 | Pol Martin Tiffon v Sadio Doumbia | 6-7,6-4,6-7 |
| Challenger - Gran Canaria | 2021/02/21 15:00 | Elmar Ejupovic v Sadio Doumbia | 7-6,6-3 |
| Challenger Cherbourg | 2021/02/07 11:00 | Sadio Doumbia v Jonas Forejtek | 6-7,2-6 |
| UK Pro League | 2021/10/03 10:45 | Scott Duncan v N. Vijay Sundar Prashanth | 6-1,6-4 |
| UK Pro League | 2021/10/02 14:00 | Daniel Cox v N. Vijay Sundar Prashanth | 6-2,6-1 |
| UK Pro League | 2021/09/30 10:15 | N. Vijay Sundar Prashanth v Liam Hignett | 2-6,7-5,10-6 |
| UK Pro League | 2021/09/28 12:30 | N. Vijay Sundar Prashanth v Michael Shaw | 7-5,4-6,10-8 |
| UK Pro League | 2021/09/27 12:30 | N. Vijay Sundar Prashanth v Patrick Foley | 7-6,6-3 |
| ITF M15 - New Delhi | 2021/03/28 04:00 | Ishaque Eqbal v N. Vijay Sundar Prashanth | 7-5,2-6,10-6 |
| ITF M15 - Pune | 2021/03/25 04:30 | Zane Khan v N. Vijay Sundar Prashanth | 6-3,7-5 |
| ITF M15 - Pune | 2021/03/24 07:45 | Faisal Qamar v N. Vijay Sundar Prashanth | 4-6,2-6 |