Stadium: Court 11 Round: 25 Ground: Hardcourt outdoor
| Challenger Ambato | 2021/09/19 17:10 | Alejandro Gonzalez v Alejandro Mendoza | 6-2,6-2 |
| Challenger Quito | 2021/09/13 15:00 | Alexis Gautier v Alejandro Mendoza | 6-1,6-0 |
| ITF M15 Ibague | 2021/09/10 18:30 | Alejandro Mendoza v Alejandro Gomez | 3-6,6-3,3-6 |
| ITF M15 Ibague | 2021/09/09 14:30 | Alejandro Mendoza v Enrique Pena | 6-2,6-2 |
| ITF M15 Ibague | 2021/09/08 17:00 | Alejandro Mendoza v Gustavo Tedesco | 6-1,6-3 |
| ITF M25 Oviedo | 2021/08/31 07:00 | Alejandro Mendoza v Nicolas Alvarez | 2-6,3-6 |
| ITF M25 Oviedo | 2021/08/30 08:00 | Alejandro Mendoza v Mario Mansilla Diez | 1-6,3-6 |
| ITF M25 Santander | 2021/08/23 09:00 | Alejandro Mendoza v Samuel M Arjona | 6-4,3-6,9-11 |
| ITF M15 Cancun | 2021/09/21 14:00 | Seita Watanabe v Leonardo Civita-Telles | 3-6,6-4,5-7 |
| ITF M15 Cairo | 2021/09/09 08:00 | Seita Watanabe v Maxime Mora | 5-7,2-6 |
| ITF M15 Cairo | 2021/09/08 08:00 | Seita Watanabe v Elbert Barr | 6-0,6-0 |
| ITF M15 Cairo | 2021/09/01 09:50 | Fares Zakaria v Seita Watanabe | 6-2,7-6 |
| ITF M15 Monastir | 2021/08/24 07:30 | Seita Watanabe v Kai Lemstra | 1-6,1-6 |
| ITF M15 Monastir | 2021/08/23 09:00 | Seita Watanabe v Samir Hamza Reguig | 6-0,6-0 |
| ITF M15 Monastir | 2021/08/22 11:00 | Seita Watanabe v Danila Moroz | 6-0,6-0 |
| ITF M15 Monastir | 2021/08/17 07:30 | Jeremy Beale v Seita Watanabe | 6-7,6-3,10-7 |