Stadium: Court 2 Round: 25 Ground: Clay
| 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 Montauban | 2021/06/23 13:15 | Titouan Droguet v Robert Strombachs | 6-4,4-6,6-2 |
| ITF M25 Montauban | 2021/06/21 17:15 | Robert Strombachs v Thibault Verdier | 6-1,6-1 |
| ITF M15 Gaiba | 2021/06/09 08:30 | Robert Strombachs v Giorgio Ricca | 2-6,1-6 |
| ITF M15 Monastir | 2021/06/04 09:40 | Robert Strombachs v Yanki Erel | 4-6,6-3,4-6 |
| ITF M15 Monastir | 2021/06/03 08:30 | Robert Strombachs v Youcef Rihane | 6-4,7-5 |
| ITF M15 Gdynia | 2021/08/10 12:25 | Wilson Leite v Jack Pinnington Jones | 2-6,3-6 |
| ITF M25 Grodzisk Mazowiecki | 2021/08/05 08:30 | Wilson Leite v Shintaro Mochizuki | 6-7,6-1,0-6 |
| ITF M25 Grodzisk Mazowiecki | 2021/08/03 13:35 | Wilson Leite v Dominik Kellovsky | 6-4,6-2 |
| ITF M15 Novi Sad | 2021/07/28 07:25 | Wilson Leite v Duje Kekez | 2-6,3-6 |
| ITF M15 Esch/Alzette | 2021/07/21 11:10 | Wilson Leite v Deney Wassermann | 6-3,1-6,3-6 |
| ITF M15 Esch/Alzette | 2021/07/20 09:00 | Wilson Leite v Tim Heger | 6-4,6-3 |
| ITF M25 Marburg | 2021/07/06 17:25 | Jonathan Mridha v Wilson Leite | 6-2,6-4 |
| ITF M25 Wroclaw | 2021/06/28 09:30 | Wilson Leite v Yann Wojcik | 5-7,7-5,8-10 |