Stadium: Court 3 Round: 62 Ground: Hardcourt outdoor
| ITF - M15 Monastir | 2021/04/04 10:30 | Ribeiro Marcondes, Igor v Raphael Calzi | 7-6,7-6 |
| ITF - M15 Monastir | 2021/04/03 08:30 | Franco Agamenone v Ribeiro Marcondes, Igor | 6-3,6-4 |
| ITF - M15 Monastir | 2021/04/02 11:25 | Ribeiro Marcondes, Igor v Avidzba, Alen | 6-3,6-2 |
| ITF - M15 Monastir | 2021/04/01 12:35 | Alex Barrena v Ribeiro Marcondes, Igor | 6-3,1-6,1-6 |
| ITF - M15 Monastir | 2021/03/31 12:15 | Hazem Naw v Ribeiro Marcondes, Igor | 1-6,6-3,4-6 |
| ITF - M15 Monastir | 2021/03/30 08:00 | Ribeiro Marcondes, Igor v Buvaysar Gadamauri | 6-2,6-1 |
| ITF - M15 Monastir | 2021/03/29 09:00 | Ribeiro Marcondes, Igor v Nicolas Tepmahc | 6-2,7-5 |
| ITF - M15 Monastir | 2021/03/28 08:00 | Ribeiro Marcondes, Igor v Maikel De Boes | 6-1,6-1 |
| ITF - M15 Monastir | 2021/04/04 10:30 | Pereira, Miguel Fernando v Matuszewski, Piotr | 3-6,3-6 |
| ITF - M15 Sharm El Sheikh | 2021/02/07 11:00 | Matuszewski, Piotr v Lorenzo Rottoli | 4-6,0-6 |
| ITF - M15 Sharm El Sheikh | 2021/01/31 09:00 | Daisuke Sumizawa v Matuszewski, Piotr | 4-6,6-1,10-8 |
| ITF M15 Cairo | 2021/01/26 08:00 | Naoki Tajima v Matuszewski, Piotr | 6-4,6-4 |
| ITF M15 Cairo | 2021/01/26 08:00 | Naoki Tajima v Matuszewski, Piotr | 6-4,6-4 |
| ITF M15 Cairo | 2021/01/25 08:00 | Matuszewski, Piotr v Goveas, Aryan | 7-6,6-2 |
| ITF M15 Cairo | 2021/01/19 08:00 | Franco Agamenone v Matuszewski, Piotr | 6-2,6-1 |
| ITF M15 Cairo | 2021/01/18 08:00 | Matuszewski, Piotr v Kawakami, Rimpei | 7-6,6-3 |