Stadium: Court 1 Round: 25 Ground: Hardcourt indoor
| ITF M15 Forbach | 2021/09/30 09:00 | Robert Strombachs v Arthur Bouquier | 7-6,4-6,4-6 |
| ITF M15 Forbach | 2021/09/28 09:55 | Robert Strombachs v Antoine Monaco | 6-4,6-2 |
| Davis Cup | 2021/09/18 08:00 | Altug Celikbilek v Robert Strombachs | 7-6,6-4 |
| ITF M15 Monastir | 2021/09/07 09:30 | Terence Atmane v Robert Strombachs | 6-2,7-6 |
| ITF M15 Lodz | 2021/08/17 08:00 | Robert Strombachs v Wilson Leite | 5-7,4-6 |
| ITF M15 Gdynia | 2021/08/11 08:00 | Robert Strombachs v Pawel Juszczak | 4-6,7-6,4-6 |
| ITF M15 Monastir | 2021/07/01 10:35 | Robert Strombachs v Luca Giacomini | 4-6,1-6 |
| ITF M15 Monastir | 2021/06/30 08:30 | Robert Strombachs v Antonio Cayetano March | 6-3,7-5 |
| ITF M25 Nevers | 2021/10/04 14:10 | Lisandru Rodriguez v Ben Jones | 4-6,5-7 |
| ITF M25 Plaisir | 2021/09/14 10:50 | Lisandru Rodriguez v Marvin Moeller | 1-6,0-6 |
| ITF M25 Bagneres-De-Bigorre | 2021/09/03 11:10 | Antoine Escoffier v Lisandru Rodriguez | 6-3,6-1 |
| ITF M25 Bagneres-De-Bigorre | 2021/08/31 14:20 | Lisandru Rodriguez v Liova Ajavon | 6-2,7-5 |
| ITF M25 Bagneres-De-Bigorre | 2021/08/30 08:00 | Lisandru Rodriguez v Max Cunat | 6-1,3-6,10-6 |
| ITF M25 Lesa | 2021/08/26 12:05 | Lisandru Rodriguez v Andrea Picchione | 4-6,4-6 |
| ITF M25 Lesa | 2021/08/24 11:50 | Alessio Tramontin v Lisandru Rodriguez | 3-6,1-6 |
| ITF M25 Bolzano | 2021/08/04 10:10 | Lisandru Rodriguez v Luca Vanni | 4-6,2-6 |