Stadium: Pista Central Round: 26 Ground: Hardcourt outdoor
| ITF M15 Cairo | 2021/09/22 09:20 | Diego A B Sanchez v Edoardo Lavagno | 1-6,3-6 |
| ITF M15 Cairo | 2021/09/15 10:05 | Diego A B Sanchez v Battaglino, Stefano | 1-6,4-6 |
| ITF M25 Oviedo | 2021/09/01 12:40 | Oscar Jose Gutierrez v Diego A B Sanchez | 6-3,7-5 |
| ITF M25 Oviedo | 2021/08/31 06:55 | Pereira, Miguel Fernando v Diego A B Sanchez | 1-6,7-6,3-6 |
| ITF M25 Oviedo | 2021/08/30 07:50 | Diego A B Sanchez v Mikel Martinez | 6-3,6-1 |
| ITF M25 Oviedo | 2021/08/29 08:00 | Diego A B Sanchez v Ignacio B Alia | 6-0,6-1 |
| ITF M25 Denia | 2021/07/28 09:55 | Nick Hardt v Diego A B Sanchez | 6-4,6-1 |
| ITF - M15 Monastir | 2021/06/20 10:30 | Kody Pearson v Diego A B Sanchez | 6-7,6-1,11-9 |
| ITF - M15 Monastir | 2021/10/08 08:25 | Marek, Wojciech v Guy Den Ouden | 4-6,5-7 |
| ITF - M15 Monastir | 2021/10/07 11:55 | Marek, Wojciech v Abderrahman, Wissam | 6-2,6-4 |
| ITF - M15 Monastir | 2021/10/06 12:15 | Marek, Wojciech v Viktor Jovic | 7-6,6-4 |
| ITF - M15 Monastir | 2021/09/29 10:40 | Marek, Wojciech v Daisuke Sumizawa | 3-6,4-6 |
| ITF M15 Zilina | 2021/09/02 07:55 | Marek, Wojciech v Mariano Navone | 7-5,5-7,6-7 |
| ITF M15 Zilina | 2021/09/01 09:20 | Marek, Wojciech v Andrej Krajcik | 6-0,6-3 |
| Challenger Warsaw | 2021/08/22 09:00 | Marek, Wojciech v Daniel Michalski | 6-7,1-6 |
| ITF M15 Lodz | 2021/08/20 08:00 | Wojcik, Yann v Marek, Wojciech | 7-6,6-3 |