Stadium: Court 7 Round: 25 Ground: Clay
| Challenger Tampere | 2021/07/19 10:40 | Kyrian Jacquet v Nicolas Kicker | 4-6,7-6,2-6 |
| Challenger Tampere | 2021/07/18 10:20 | Kyrian Jacquet v Luca Castelnuovo | 6-7,6-1,6-0 |
| ITF M25 Marburg | 2021/07/06 16:15 | Max Wiskandt v Kyrian Jacquet | 6-2,6-4 |
| ITF M25 Bourg-en-Bresse | 2021/06/30 15:45 | Kyrian Jacquet v Jakub Paul | 1-6,5-7 |
| Challenger Aix en Provence | 2021/06/19 13:15 | Carlos Taberner v Kyrian Jacquet | 6-3,6-7,6-0 |
| Challenger Aix en Provence | 2021/06/18 12:30 | Kyrian Jacquet v Titouan Droguet | 7-5,6-3 |
| Challenger Aix en Provence | 2021/06/17 09:00 | Juan Pablo Varillas v Kyrian Jacquet | 4-6,3-6 |
| Challenger Aix en Provence | 2021/06/15 11:20 | Maxime Janvier v Kyrian Jacquet | 3-6,6-7 |
| Challenger Amersfoort | 2021/07/13 10:00 | Goncalo Oliveira v Botic Van De Zandschulp | 2-6,4-6 |
| Challenger Porto | 2021/07/02 12:00 | Goncalo Oliveira v Sergiy Stakhovsky | 6-7,6-7 |
| Challenger Porto | 2021/06/30 10:00 | Peter Polansky v Goncalo Oliveira | 6-7,4-6 |
| Challenger Porto | 2021/06/29 10:00 | Goncalo Oliveira v Nuno Borges | 6-1,6-2 |
| Challenger Milán | 2021/06/20 10:30 | Goncalo Oliveira v Nerman Fatic | 6-4,5-7,3-6 |
| Challenger Prostějov | 2021/06/14 10:25 | Goncalo Oliveira v Michael Vrbensky | 3-6,6-2,4-6 |
| Challenger Little Rock | 2021/06/05 16:00 | Emilio Gomez v Goncalo Oliveira | 6-4,6-2 |
| Challenger Little Rock | 2021/06/03 17:50 | Mukund Sasikumar v Goncalo Oliveira | 6-4,4-6,2-6 |